Genome-wide association study of advanced age-related macular degeneration identifies a role of the hepatic lipase gene ( LIPC )
Open accessAbstract
Advanced age-related macular degeneration (AMD) is the leading cause of late onset blindness. We present results of a genome-wide association study of 979 advanced AMD cases and 1,709 controls using the Affymetrix 6.0 platform with replication in seven additional cohorts (totaling 5,789 unrelated cases and 4,234 unrelated controls). We also present a comprehensive analysis of copy-number variations and polymorphisms for AMD. Our discovery data implicated the association between AMD and a variant in the hepatic lipase gene ( LIPC ) in the high-density lipoprotein cholesterol (HDL) pathway (discovery P = 4.53e-05 for rs493258). Our LIPC association was strongest for a functional promoter variant, rs10468017, ( P = 1.34e-08), that influences LIPC expression and serum HDL levels with a protective effect of the minor T allele (HDL increasing) for advanced wet and dry AMD. The association we found with LIPC was corroborated by the Michigan/Penn/Mayo genome-wide association study; the locus near the tissue inhibitor of metalloproteinase 3 was corroborated by our replication cohort for rs9621532 with P = 3.71e-09. We observed weaker associations with other HDL loci ( ABCA1 , P = 9.73e-04; cholesterylester transfer protein, P = 1.41e-03; FADS1-3 , P = 2.69e-02). Based on a lack of consistent association between HDL increasing alleles and AMD risk, the LIPC association may not be the result of an effect on HDL levels, but it could represent a pleiotropic effect of the same functional component. Results implicate different biologic pathways than previously reported and provide new avenues for prevention and treatment of AMD.
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Written from the paper’s full text.
TL;DR
This GWAS of advanced AMD (979 cases/1,709 controls in discovery; 5,789 cases/4,234 controls in replication) identified a replicated association at *LIPC* rs10468017 (P = 1.34 × 10⁻⁸), with the minor T allele protective (OR = 0.82). Other HDL loci showed weaker or inconsistent associations, suggesting the *LIPC* effect may not be mediated by HDL levels.
Key findings
- *LIPC* rs493258 was associated in discovery (P = 4.53 × 10⁻⁵) and reached P = 1.61 × 10⁻⁸ after replication; the functional promoter variant rs10468017 gave P = 1.34 × 10⁻⁸, OR = 0.82 (95% CI 0.77–0.88), with minor T allele frequency 25.8% in cases vs 30.0% in controls.
- rs9621532 near *TIMP3*/*SYN3* showed a protective effect for the minor C allele (OR = 0.62, 95% CI 0.53–0.73, P = 3.71 × 10⁻⁹) in combined analysis.
- Other HDL loci were weaker and directionally inconsistent: *ABCA1* rs1883025 P = 9.73 × 10⁻⁴, *CETP* rs3764261 P = 1.41 × 10⁻³, *FADS1-3* rs174547 P = 2.69 × 10⁻²; no consistent trend between HDL-raising alleles and AMD risk was observed.
- CNV analyses found no common CNPs with P < 0.001 except the previously reported *CFHR1* deletion (P = 1 × 10⁻¹⁹), explained by known *CFH* variants, and no genome-wide enrichment of rare CNVs in cases vs controls.
Methods
- Discovery GWAS used 979 unrelated advanced AMD cases and 1,709 controls genotyped on Affymetrix 6.0; replication included seven additional cohorts totaling 5,789 unrelated cases and 4,234 unrelated controls.
- Association was assessed by logistic regression in PLINK, with meta-analysis using weighted Z scores; final genomic control λ was 1.036 for 632,932 SNPs after including seven principal components.
- CNV analysis used Birdsuite/CANARY/Birdseye for 554 common CNPs and rare CNVs >100 kb; LIPC expression was examined by immunoprecipitation, quantitative RT-PCR, and immunohistochemistry in bovine, mouse, and human retinal samples.
Limitations
- Stated: modest heterogeneity was observed for rs10468017 across replication samples (Breslow–Day P = 0.022); the UT sample lacked association and FR-CRET had higher-than-expected association, though excluding both strengthened the result (P = 6.45 × 10⁻⁹).
- Stated: the scan did not have sufficient statistical power to conclusively highlight weak or moderate subtype-specific SNP associations between advanced dry and wet AMD.
- Evident from the text: additional discovery controls were unscreened for AMD status, and the Tufts/MGH replication set included 379 unexamined controls, which could affect phenotype classification; the case-control design also cannot establish causality.
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Claims the paper makes
0 of 13 cited sources checked · 0 supported · 0 flagged
- Findingown data
The minor T allele of rs10468017 (HDL increasing) has a protective effect for advanced wet and dry AMD.
“with a protective effect of the minor T allele (HDL increasing) for advanced wet and dry AMD”
Quote in the paperSubstantial claim - Findingown data
The discovery GWAS data implicated an association between advanced AMD and a variant in the hepatic lipase gene (LIPC) in the HDL pathway (discovery P = 4.53e-05 for rs493258).
“Our discovery data implicated the association between AMD and a variant in the hepatic lipase gene (*LIPC*) in the high-density lipoprotein cholesterol (HDL) pathway (discovery *P* = 4.53e-05 for rs493258).”
Quote in the paperSubstantial claim - Findingown data
Of 159 SNPs in linkage disequilibrium with the most positively associated variants, 137 showed an improvement in the chi-square statistic with the addition of the additional controls.
“We examined 159 SNPs that were in linkage disequilibrium (LD) with the most positively associated variants, and of these SNPs, 137 showed an improvement in the χ2 with the addition of these controls.”
Quote in the paperSubstantial claim - Findingown data
The most significant, replicated association in this study is a functional variation in the hepatic lipase gene (LIPC).
“our most significant, replicated association is a functional variation in the hepatic lipase gene (*LIPC*)”
Quote in the paperSubstantial claim - Findingown data
The LIPC association was strongest for the functional promoter variant rs10468017 (P = 1.34e-08).
“Our *LIPC* association was strongest for a functional promoter variant, rs10468017, (*P* = 1.34e-08)”
Quote in the paperSubstantial claim
- Findingown data
rs10468017 is observed to have a consistent odds ratio for geographic atrophy (advanced dry OR = 0.73) and neovascular AMD (wet OR = 0.77) when each disease subtype is compared with controls (Tufts/MGH only).
“This SNP, like those in the complement pathway loci, is observed to have a consistent OR for geographic atrophy (advanced dry OR = 0.73; Tufts/MGH only) and neovascular AMD (wet OR = 0.77; Tufts/MGH only) when each disease subtype is compared with controls.”
Quote in the paperNot a substantial claim - Findingown data
No significant gene-gene interactions were found between rs10468017 and seven previously established genetic loci when evaluating their effect on risk of advanced AMD.
“We found no significant gene–gene interactions between this SNP and seven previously established genetic loci when evaluating their effect on risk of advanced AMD.”
Quote in the paperNot a substantial claim - Findingnone given
The LIPC association found in this study was corroborated by the Michigan/Penn/Mayo genome-wide association study.
“The association we found with *LIPC* was corroborated by the Michigan/Penn/Mayo genome-wide association study”
Quote in the paperNot a substantial claim - Findingown data
No evidence was found for other reported candidate gene associations with AMD, including TLR3, SERPING1, LRP6, PEDF, VEGF, TLR4, CX3CR1, ELOVL4, PON1, and SOD2.
“We did not find evidence for other reported candidate gene associations with AMD ([22](#r22)), including *TLR3, SERPING1, LRP6, PEDF, VEGF, TLR4, CX3CR1, ELOVL4, PON1*, and *SOD2*”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [22] Haddad S, Chen CA, Santangelo SL, Seddon JM. The genetics of age-related macular degeneration: A review of progress to date. Surv Ophthalmol. 2006;51:316–363. doi: 10.1016/j.survophthal.2006.05.001. [[DOI](https://doi.org/10.1016/j.survophthal.2006.05.001)] [[PubMed](https://pubmed.ncbi.nlm.nih.gov/16818082/)] [[Google Scholar](https://scholar.google.com/scholar_lookup?journal=Surv%20Ophthalmol&title=The%20genetics%20of%20age-related%20macular%20degeneration:%20A%20review%20of%20progress%20to%20date&author=S%20Haddad&author=CA%20Chen&author=SL%20Santangelo&author=JM%20Seddon&volume=51&publicat source
Not checked in the free run.
- Findingown data
The locus near the tissue inhibitor of metalloproteinase 3 was corroborated by the replication cohort for rs9621532 with P = 3.71e-09.
“the locus near the tissue inhibitor of metalloproteinase 3 was corroborated by our replication cohort for rs9621532 with *P* = 3.71e-09”
Quote in the paperNot a substantial claim - Findingown data
After quality control, the average ratio of the final study chi-square to the initial study chi-square was 1.82, nearly identical to the expected improvement of 1.84 from theoretic power calculations.
“After quality control, the average ratio of the final study χ2 to the initial study χ2 was 1.82—nearly identical to the expected improvement in χ2 based on theoretic power calculations of 1.84.”
Quote in the paperNot a substantial claim - Findingown data
This study has uncovered several new AMD susceptibility loci.
“Our study has uncovered several new AMD susceptibility loci.”
Quote in the paperSubstantial claim - Findingown data
The estimated odds ratio for rs10468017 from the combined discovery plus replication data was 0.82 (95% confidence interval 0.77-0.88).
“The estimated odds ratio (OR) for rs10468017 from the combined discovery plus replication data was 0.82 (95% confidence interval = 0.77–0.88)”
Quote in the paperSubstantial claim - Findingown data
A significant association between advanced AMD and the LIPC locus was found in the GWAS.
“We found a significant association between advanced AMD and the *LIPC* locus in our GWAS.”
Quote in the paperSubstantial claim - Findingown data
No evidence was found for any rare CNVs disrupting genes at the six confirmed associated loci.
“We also did not find evidence for any rare CNVs disrupting genes at the six confirmed associated loci.”
Quote in the paperNot a substantial claim - Findingown data
For rs10468017, there was modest evidence for heterogeneity under the Breslow-Day test for the replication samples (P = 0.022).
“For rs10468017, there was modest evidence for heterogeneity under the Breslow–Day test for our replication samples (*P* = 0.022)”
Quote in the paperNot a substantial claim - Findingown data
If the UT and FR-CRET samples were excluded, the association for rs10468017 was stronger (P = 6.45 × 10−9).
“If these two samples were excluded, the association was stronger (*P* = 6.45 × 10−9).”
Quote in the paperNot a substantial claim - Findingown data
LIPC message was amplified from total RNA isolated both from human retinal epithelial transformed cells (RPE19) and human eyes.
“Consistent with our expression data from mouse retina, we were also able to amplify *LIPC* message from total RNA isolated both from human retinal epithelial transformed cells (RPE19) and human eyes.”
Quote in the paperNot a substantial claim - Findingown data
SNP rs11755724 on chromosome 6 showed a protective effect of the A allele with P = 9.88 × 10−7 and OR = 0.87.
“SNP rs11755724 on chromosome 6 showed a protective effect of the A allele with *P* = 9.88 × 10−7 and OR = 0.87.”
Quote in the paperNot a substantial claim - Findingown data
LIPC is expressed in the retina, as shown by the authors' experiments.
“LIPC has been shown through our experiments to be expressed in the retina”
Quote in the paperSubstantial claim - Findingown data
The FR-CRET sample had higher than expected association for rs10468017 (Breslow-Day P = 0.040).
“the FR-CRET sample (Breslow–Day *P* = 0.040) had higher than expected association”
Quote in the paperNot a substantial claim - Findingown data
The authors' data suggest that the T allele of the LIPC SNP decreases risk for AMD.
“our data suggest that it decreases risk for AMD.”
Quote in the paperSubstantial claim- Rests on an assumption: The T allele of the LIPC SNP increases HDL levels.
- Findingown data
The UT sample lacked association for rs10468017 (Breslow-Day P = 2.7 × 10−3).
“the UT sample (Breslow–Day *P* = 2.7 × 10−3) lacked association”
Quote in the paperNot a substantial claim - Findingown data
No excess of SNPs with P < 10−4 beyond the number expected by chance was observed when comparing advanced wet and dry AMD subtypes separately with controls.
“we did not observe excess of SNPs with *P <* 10−4 beyond the number expected by chance.”
Quote in the paperNot a substantial claim - Findingown data
Combined with replication cohorts, rs9621532 results were in the direction of a protective effect for the minor C allele (OR = 0.62, P = 3.71 × 10−9).
“Combined with our replication cohorts, results were in the direction of a protective effect for the minor C allele (OR = 0.62, *P* = 3.71 × 10−9).”
Quote in the paperNot a substantial claim - Findingown data
When comparing advanced wet and dry AMD subtypes separately with controls across the genome, no associations with P < 10−6 were observed.
“When comparing these subtypes separately with controls across the genome, we did not observe any associations with *P <* 10−6”
Quote in the paperNot a substantial claim - Findingown data
When discovery results were combined with replication samples, the meta P was 1.41 × 10−3 for the CETP SNP rs3764261.
“When our discovery results were combined with the replication samples, the meta *P* was 1.41 × 10−3 for the cholesterylester transfer protein (*CETP*) SNP, rs3764261.”
Quote in the paperNot a substantial claim - Findingown data
No consistent trend for HDL-raising or -lowering alleles conferring risk of AMD was seen.
“No consistent trend for HDL-raising or -lowering alleles conferring risk of AMD was seen”
Quote in the paperSubstantial claim - Interpretationown data
The minor allele T of rs10468017 is associated with a reduced risk of AMD.
“showing that the minor allele T, previously associated with reduced LIPC expression and higher HDL, is also associated with a reduced risk of AMD”
Quote in the paperSubstantial claim - Study design and conductnone given
Stringent quality control was conducted to ensure the technical and population compatibility of the additional control datasets with the study data.
“we conducted stringent quality control to ensure the technical and population compatibility of these datasets ([*Methods*](#s3) and [Table S2](http://www.pnas.org/cgi/data/0912019107/DCSupplemental/Supplemental_PDF#nameddest=st02))”
Quote in the paperSubstantial claim - Interpretationown data
The observed association with AMD is likely caused by the functional variant rs10468017.
“Therefore, we concluded that the observed association with AMD is likely caused by this functional variant that has been identified in genetic studies of HDL levels ([25](#r25)).”
Quote in the paperSubstantial claim0 of 1 sources checked- cites [25] Kathiresan S, et al. Common variants at 30 loci contribute to polygenic dyslipidemia. Nat Genet. 2009;41:56–65. doi: 10.1038/ng.291. [[DOI](https://doi.org/10.1038/ng.291)] [[PMC free article](/articles/PMC2881676/)] [[PubMed](https://pubmed.ncbi.nlm.nih.gov/19060906/)] [[Google Scholar](https://scholar.google.com/scholar_lookup?journal=Nat%20Genet&title=Common%20variants%20at%2030%20loci%20contribute%20to%20polygenic%20dyslipidemia&author=S%20Kathiresan&volume=41&publication_year=2009&pages=56-65&pmid=19060906&doi=10.1038/ng.291&)] source
Not checked in the free run.
- Premisecitation
Together with strongly associated variants in the ARMS2/HTRA1 region on chromosome 10, these multiple loci have been estimated to explain approximately one-half of the heritability of AMD.
“Together with strongly associated variants in the *ARMS2/HTRA1* region on chromosome 10 ([12](#r12), [13](#r13)), these multiple loci have been estimated to explain approximately one-half of the heritability of AMD ([6](#r6))”
Quote in the paperSubstantial claim0 of 1 sources checked- cites [6] Maller J, et al. Common variation in three genes, including a noncoding variant in CFH, strongly influences risk of age-related macular degeneration. Nat Genet. 2006;38:1055–1059. doi: 10.1038/ng1873. [[DOI](https://doi.org/10.1038/ng1873)] [[PubMed](https://pubmed.ncbi.nlm.nih.gov/16936732/)] [[Google Scholar](https://scholar.google.com/scholar_lookup?journal=Nat%20Genet&title=Common%20variation%20in%20three%20genes,%20including%20a%20noncoding%20variant%20in%20CFH,%20strongly%20influences%20risk%20of%20age-related%20macular%20degeneration&author=J%20Maller&volume=38&publication_year=2006&pag source
Not checked in the free run.
- Interpretationown data
The pattern of results from previously reported HDL loci was inconsistent with a straightforward correlation between HDL levels and AMD.
“The pattern of results from the previously reported HDL loci was inconsistent with a straightforward correlation between HDL levels and AMD.”
Quote in the paperSubstantial claim- Rests on an assumption: If the LIPC-AMD association were driven by HDL levels, all SNPs associated with HDL would show some association with AMD and in a consistent direction.
- Interpretationown data
The LIPC association may be a consequence of pleiotropy.
“suggesting that the *LIPC* association may be a consequence of pleiotropy.”
Quote in the paperNot a substantial claim - Study design and conductown data
The scan did not have sufficient statistical power to conclusively highlight weak or moderate subtype-specific SNP associations between advanced wet and dry AMD.
“Our scan did not have sufficient statistical power to conclusively highlight weak or moderate subtype-specific SNP associations between these two advanced forms of AMD.”
Quote in the paperSubstantial claim
- May combine two claims. 24
- Classified as probably not a substantial claim. 14
May combine two claims.
Findingown datars493258 is located 35 kb upstream of the LIPC gene on chromosome 15q22 and is in linkage disequilibrium (r2 = 0.33; D′ = 0.847) with the functional variant rs10468017.
“This SNP is located 35 kb upstream of the *LIPC* gene on chromosome 15q22 and is in LD (*r*2 = 0.33; D′ = 0.847) with the previously described functional variant (rs10468017)”
Quote in the paperSubstantial claimMay combine two claims.
Findingown dataThe regions of previously reported association are near CFH (rs572515 proxy for rs1061170, r2 = 0.654, P < 10−55; rs10737680 proxy for rs1410996, r2 = 1, P < 10−47), CFI (rs7690921 proxy for rs10033900, r2 = 0.403, P < 10−4), CFB/C2 (rs522162 proxy for rs641153, r2 = 1, P < 10−6), and the ARMS2/HTRA1 locus (rs10490924, P < 10−59).
“The regions of previously reported association are near *CFH* (rs572515 proxy for rs1061170 with *r*2 = 0.654 and *P* < 10−55; rs10737680 proxy for *CFH* rs1410996 with *r*2 = 1 and *P* < 10−47), *CFI* (rs7690921 proxy for rs10033900 with *r*2 = 0.403 and *P* < 10−4), *CFB/C2* (rs522162 proxy for rs641153 with *r*2 = 1 and *P* < 10−6), and the *ARMS2*/*HTRA1* locus (rs10490924 with *P* < 10−59)”
Quote in the paperNot a substantial claimMay combine two claims.
Findingown datars493258 is not associated with AMD conditional on rs10468017, but rs10468017 remains associated with AMD (P < 0.001) conditional on rs493258.
“Logistic regression analyses conditional on allelic dosage of each SNP indicated that rs493258 is not associated with AMD conditional on rs10468017, but rs10468017 is still associated with AMD (*P <* 0.001) conditional on association at rs493258.”
Quote in the paperSubstantial claimProbably not a substantial claim: may not pass S3 (load-bearing).
Findingown dataThe top end of the QQ plot is dominated by the strong associations of previously reported SNPs, which were excluded to more fully examine the remaining results.
“The top end of the QQ plot ([Fig. S1*A*](http://www.pnas.org/cgi/data/0912019107/DCSupplemental/Supplemental_PDF#nameddest=sfig01)) is dominated by the strong associations of previously reported SNPs, which were excluded to more fully examine the remaining results”
Quote in the paperNot a substantial claimMay combine two claims.
Findingown dataWith additional replication, rs493258 on chromosome 15 showed significant association with AMD (P = 1.61 × 10−8; independent of the MPM GWAS data, P = 4.92 × 10−7).
“With additional replication, the SNP that we identified on chromosome 15, rs493258, showed significant association with *P* = 1.61 × 10−8 (independent of the MPM GWAS data *P* = 4.92 × 10−7).”
Quote in the paperSubstantial claimMay combine two claims.
Findingown dataNo other SNPs reached genome-wide significance of P < 5 × 10−8, but several SNPs of interest in new regions with P values between 10−4 and 10−6 were identified in the discovery scan, including rs493258 (LIPC) with P = 4.5 × 10−5.
“Although no other SNPs reached genome-wide significance of *P* < 5 × 10−8 (20), we did identify several SNPs of interest in new regions with *P* values between 10−4 and 10−6 in our discovery scan ([Table 1](#t01)), including rs493258 (*LIPC*) with *P* = 4.5 × 10−5”
Quote in the paperSubstantial claimMay combine two claims.
Findingown dataWeaker associations were observed with other HDL loci: ABCA1 (P = 9.73e-04), cholesterylester transfer protein (P = 1.41e-03), and FADS1-3 (P = 2.69e-02).
“We observed weaker associations with other HDL loci (*ABCA1*, *P* = 9.73e-04; cholesterylester transfer protein, *P* = 1.41e-03; *FADS1-3*, *P* = 2.69e-02).”
Quote in the paperNot a substantial claimMay combine two claims.
Findingown dataThe ABCA1 variant rs1883025 (meta P = 9.73 × 10−4) was not genome-wide significant and showed discordant effects between the HDL-increasing allele and protective or risk effects for AMD.
“The variant, rs12678919, in the lipoprotein lipase precursor gene (*LPL*) with meta *P* = 0.07 as well as rs1883025 in the ATP-binding cassette, subfamily A member 1 (*ABCA1*) gene with meta *P* = 9.73 × 10−4, were also not genome-wide significant, and they showed discordant effects between the HDL-increasing allele and protective or risk effects for AMD.”
Quote in the paperNot a substantial claimMay combine two claims.
Findingown dataThese rare CNV events were not enriched across the genome among cases compared with controls, nor were there specific regions showing association of a rare CNV (Fisher's exact test P < 0.01).
“However, these events were not enriched across the genome among cases compared with controls nor were there specific regions showing association of a rare CNV (Fisher's exact test *P* < 0.01).”
Quote in the paperNot a substantial claimProbably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.
Findingown dataThe SNPs at the LIPC locus were not on the list of top SNPs from the MPM scan, and rs9621532 was not on the authors' list of top SNPs.
“Of note, the SNPs at the *LIPC* locus were not on the list of top SNPs from the MPM scan, and the SNP rs9621532 was not on our list of top SNPs.”
Quote in the paperNot a substantial claimMay combine two claims.
Findingown dataData from the authors' scan suggest that the HDL-raising alleles of ABCA1 and CETP may increase the risk of AMD, although these results are not currently genome-wide significant.
“In contrast, data from our scan suggest that the HDL-raising alleles of *ABCA1* and *CETP* may increase the risk of AMD, although these results are not currently genome-wide significant.”
Quote in the paperNot a substantial claimMay combine two claims.
Findingown dataProminent labeling of all retinal neurons was observed, especially in retinal ganglion cells of the central retina; Mueller glial cells were unlabeled, and RPE cells appeared to exhibit significant fluorescence signal beyond intrinsic autofluorescence.
“Prominent labeling of all retinal neurons was observed, especially in retinal ganglion cells of the central retina. However, Mueller glial cells were unlabeled, and RPE cells appeared to exhibit significant fluorescence signal beyond intrinsic autofluorescence.”
Quote in the paperNot a substantial claimMay combine two claims.
Findingown dataThe HDL-increasing allele A of CETP SNP rs3764261 was in the direction of increased risk for AMD, opposite to the protective effect seen with the functional HDL-increasing LIPC variant.
“However, the HDL-increasing allele, A, was in the direction of increased risk for AMD, opposite to the protective effect seen with the functional HDL-increasing *LIPC* variant.”
Quote in the paperNot a substantial claimProbably not a substantial claim: may not pass S3 (load-bearing).
Findingown dataAfter stringent QC, a set of 150 rare deletions and 278 rare duplications greater than 100 kb was observed.
“After stringent QC, we observed a set of 150 rare deletions and 278 rare duplications greater than 100 kb.”
Quote in the paperNot a substantial claimProbably not a substantial claim: may not pass S3 (load-bearing).
FindingcitationSNP rs13095226 on chromosome 3 (P = 2.50 × 10−6 and OR = 1.24 for the C allele) is an intronic SNP in the COL8A1 gene.
“The SNP rs13095226 on chromosome 3 (*P* = 2.50 × 10−6 and OR = 1.24 for the C allele) is an intronic SNP in the *COL8A1* gene”
Quote in the paperNot a substantial claimMay combine two claims.
Findingown dataThe LPL variant rs12678919 (meta P = 0.07) was not genome-wide significant and showed discordant effects between the HDL-increasing allele and protective or risk effects for AMD.
“The variant, rs12678919, in the lipoprotein lipase precursor gene (*LPL*) with meta *P* = 0.07 as well as rs1883025 in the ATP-binding cassette, subfamily A member 1 (*ABCA1*) gene with meta *P* = 9.73 × 10−4, were also not genome-wide significant, and they showed discordant effects between the HDL-increasing allele and protective or risk effects for AMD.”
Quote in the paperNot a substantial claimProbably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.
PremisecitationThe role of the alternative complement pathway in AMD pathogenesis was documented by the discovery and replication of the CFH association and by reports of three additional risk loci in this pathway: CFB/C2 on chromosome 6, C3 on chromosome 19, and CFI on chromosome 4.
“The role of the alternative complement pathway in disease pathogenesis was documented by the discovery ([2](#r2)–[5](#r5)) and replication ([6](#r6), [7](#r7)) of the *CFH* association as well as reports of three additional risk loci in this pathway: *CFB/C2* on chromosome 6 ([6](#r6), [8](#r8)), *C3* on chromosome 19 ([9](#r9), [10](#r10)), and *CFI* on chromosome 4 ([11](#r11)).”
Quote in the paperNot a substantial claim0 of 3 sources checked- cites [2] Haines JL, et al. Complement factor H variant increases the risk of age-related macular degeneration. Science. 2005;308:419–421. doi: 10.1126/science.1110359. [[DOI](https://doi.org/10.1126/science.1110359)] [[PubMed](https://pubmed.ncbi.nlm.nih.gov/15761120/)] [[Google Scholar](https://scholar.google.com/scholar_lookup?journal=Science&title=Complement%20factor%20H%20variant%20increases%20the%20risk%20of%20age-related%20macular%20degeneration&author=JL%20Haines&volume=308&publication_year=2005&pages=419-421&pmid=15761120&doi=10.1126/science.1110359&)] source
Not checked in the free run.
- cites [6] Maller J, et al. Common variation in three genes, including a noncoding variant in CFH, strongly influences risk of age-related macular degeneration. Nat Genet. 2006;38:1055–1059. doi: 10.1038/ng1873. [[DOI](https://doi.org/10.1038/ng1873)] [[PubMed](https://pubmed.ncbi.nlm.nih.gov/16936732/)] [[Google Scholar](https://scholar.google.com/scholar_lookup?journal=Nat%20Genet&title=Common%20variation%20in%20three%20genes,%20including%20a%20noncoding%20variant%20in%20CFH,%20strongly%20influences%20risk%20of%20age-related%20macular%20degeneration&author=J%20Maller&volume=38&publication_year=2006&pag source
Not checked in the free run.
- cites [11] Fagerness JA, et al. Variation near complement factor I is associated with risk of advanced AMD. Eur J Hum Genet. 2009;17:100–104. doi: 10.1038/ejhg.2008.140. [[DOI](https://doi.org/10.1038/ejhg.2008.140)] [[PMC free article](/articles/PMC2985963/)] [[PubMed](https://pubmed.ncbi.nlm.nih.gov/18685559/)] [[Google Scholar](https://scholar.google.com/scholar_lookup?journal=Eur%20J%20Hum%20Genet&title=Variation%20near%20complement%20factor%20I%20is%20associated%20with%20risk%20of%20advanced%20AMD&author=JA%20Fagerness&volume=17&publication_year=2009&pages=100-104&pmid=18685559&doi=10.1038/ejhg.2008 source
Not checked in the free run.
Probably not a substantial claim: may not pass S3 (load-bearing).
PremisecitationCombined with demographic, ocular, and environmental factors, these loci have potential predictive power.
“and combined with demographic, ocular, and environmental factors, they have potential predictive power ([14](#r14))”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [14] Seddon JM, et al. Prediction model for prevalence and incidence of advanced age-related macular degeneration based on genetic, demographic, and environmental variables. Invest Ophthalmol Vis Sci. 2009;50:2044–2053. doi: 10.1167/iovs.08-3064. [[DOI](https://doi.org/10.1167/iovs.08-3064)] [[PMC free article](/articles/PMC3772781/)] [[PubMed](https://pubmed.ncbi.nlm.nih.gov/19117936/)] [[Google Scholar](https://scholar.google.com/scholar_lookup?journal=Invest%20Ophthalmol%20Vis%20Sci&title=Prediction%20model%20for%20prevalence%20and%20incidence%20of%20advanced%20age-related%20macular%20degenerati source
Not checked in the free run.
Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.
PremisecitationAMD is a common, late-onset neurodegenerative disorder modified by covariates including smoking and body mass index, with a 3- to 6-fold higher recurrence ratio in siblings than in the general population.
“Age-related macular degeneration (AMD) is a common, late-onset neurodegenerative disorder that is modified by covariates including smoking and body mass index, and it has a 3- to 6-fold higher recurrence ratio in siblings than in the general population ([1](#r1)).”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [1] Seddon JM, Sobrin L. Epidemiology of age-related macular degeneration. In: Albert D, Miller J, Azar D, Blodi B, editors. Albert & Jakobiec's Principles and Practice of Ophthalmology. Philadelphia: Saunders; 2007. pp. 413–422. [[Google Scholar](https://scholar.google.com/scholar_lookup?title=Albert%20&%20Jakobiec's%20Principles%20and%20Practice%20of%20Ophthalmology&author=JM%20Seddon&author=L%20Sobrin&publication_year=2007&)]
Not checked in the free run.
May combine two claims.
PremisecitationThe variant rs10468017 influences LIPC expression and serum HDL levels.
“a functional promoter variant, rs10468017, (*P* = 1.34e-08), that influences LIPC expression and serum HDL levels”
- Also stated in: § Results of Combined Scan and Replication Analysis. · plain
“the previously described functional variant (rs10468017) reported to influence LIPC expression and serum HDL levels ([23](#r23), [24](#r24))”
Quote in the paperSubstantial claim0 of 2 sources checked- cites [23] Rufibach LE, Duncan SA, Battle M, Deeb SS. Transcriptional regulation of the human hepatic lipase (LIPC) gene promoter. J Lipid Res. 2006;47:1463–1477. doi: 10.1194/jlr.M600082-JLR200. [[DOI](https://doi.org/10.1194/jlr.M600082-JLR200)] [[PubMed](https://pubmed.ncbi.nlm.nih.gov/16603721/)] [[Google Scholar](https://scholar.google.com/scholar_lookup?journal=J%20Lipid%20Res&title=Transcriptional%20regulation%20of%20the%20human%20hepatic%20lipase%20(LIPC)%20gene%20promoter&author=LE%20Rufibach&author=SA%20Duncan&author=M%20Battle&author=SS%20Deeb&volume=47&publication_year=2006&pages=1463-1477&pm source
Not checked in the free run.
- cites [24] Grarup N, et al. The -250G>A promoter variant in hepatic lipase associates with elevated fasting serum high-density lipoprotein cholesterol modulated by interaction with physical activity in a study of 16,156 Danish subjects. J Clin Endocrinol Metab. 2008;93:2294–2299. doi: 10.1210/jc.2007-2815. [[DOI](https://doi.org/10.1210/jc.2007-2815)] [[PubMed](https://pubmed.ncbi.nlm.nih.gov/18364377/)] [[Google Scholar](https://scholar.google.com/scholar_lookup?journal=J%20Clin%20Endocrinol%20Metab&title=The%20-250G>A%20promoter%20variant%20in%20hepatic%20lipase%20associates%20with%20elevated%20fasting source
Not checked in the free run.
- Also stated in: § Results of Combined Scan and Replication Analysis. · plain
Classified as probably not a substantial claim. May combine two claims.
PremisecitationLIPC is a gene involved in triglyceride hydrolysis and high-density lipoprotein cholesterol (HDL) function.
“a gene involved in triglyceride hydrolysis and high-density lipoprotein cholesterol (HDL) function ([16](#r16))”
Quote in the paperSubstantial claim0 of 1 sources checked- cites [16] Hasham SN, Pillarisetti S. Vascular lipases, inflammation and atherosclerosis. Clin Chim Acta. 2006;372:179–183. doi: 10.1016/j.cca.2006.04.020. [[DOI](https://doi.org/10.1016/j.cca.2006.04.020)] [[PubMed](https://pubmed.ncbi.nlm.nih.gov/16765928/)] [[Google Scholar](https://scholar.google.com/scholar_lookup?journal=Clin%20Chim%20Acta&title=Vascular%20lipases,%20inflammation%20and%20atherosclerosis&author=SN%20Hasham&author=S%20Pillarisetti&volume=372&publication_year=2006&pages=179-183&pmid=16765928&doi=10.1016/j.cca.2006.04.020&)] source
Not checked in the free run.
May combine two claims.
InterpretationreasoningThe results implicate different biologic pathways than previously reported and provide new avenues for prevention and treatment of AMD.
“Results implicate different biologic pathways than previously reported and provide new avenues for prevention and treatment of AMD.”
Quote in the paperSubstantial claimProbably not a substantial claim: may not pass S2 (checkable), S3 (load-bearing).
InterpretationreasoningThese diseases may represent parallel responses to tissue injury induced by multiple factors, including genetic variation, impaired immune responses, and oxidative stress.
“These diseases may represent parallel responses to tissue injury induced by multiple factors, including genetic variation, impaired immune responses, and oxidative stress.”
Quote in the paperNot a substantial claimProbably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.
Study design and conductown dataThe final genomic control λ for the logistic regression included seven significant principal components as covariates and was 1.036 for 632,932 SNPs.
“The final genomic control λ for the logistic regression included seven significant (for prediction of phenotype status) principal components as covariates, and was 1.036 for 632,932 SNPs.”
Quote in the paperNot a substantial claimProbably not a substantial claim: may not pass S3 (load-bearing).
PremisecitationThe authors' 1997 study of the TIMP3 locus and AMD in 38 AMD families did not find evidence of association or linkage between AMD and TIMP3.
“Our study of the *TIMP3* locus and AMD in 1997, inspired by the association of this gene to Sorsby fundus dystrophy that has similar phenotypic features to advanced AMD, did not find evidence of association or linkage between AMD and *TIMP3* among 38 AMD families.”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [28] De La Paz MA, Pericak-Vance MA, Lennon F, Haines JL, Seddon JM. Exclusion of TIMP3 as a candidate locus in age-related macular degeneration. Invest Ophthalmol Vis Sci. 1997;38:1060–1065. [[PubMed](https://pubmed.ncbi.nlm.nih.gov/9152225/)] [[Google Scholar](https://scholar.google.com/scholar_lookup?journal=Invest%20Ophthalmol%20Vis%20Sci&title=Exclusion%20of%20TIMP3%20as%20a%20candidate%20locus%20in%20age-related%20macular%20degeneration&author=MA%20De%20La%20Paz&author=MA%20Pericak-Vance&author=F%20Lennon&author=JL%20Haines&author=JM%20Seddon&volume=38&publication_year=1997&pages=1060-1065&pm
Not checked in the free run.
Probably not a substantial claim: may not pass S3 (load-bearing).
Interpretationnone givenBands of mobility ∼80 kDa likely represented glycosylated hepatic lipase.
“Bands of mobility ∼80 kDa likely represented glycosylated hepatic lipase.”
Quote in the paperNot a substantial claimMay combine two claims.
PremisecitationThe minor T allele of rs10468017 is associated with reduced LIPC expression and higher HDL.
“the minor allele T, previously associated with reduced LIPC expression and higher HDL”
Quote in the paperSubstantial claim0 of 1 sources checked- cites [25] Kathiresan S, et al. Common variants at 30 loci contribute to polygenic dyslipidemia. Nat Genet. 2009;41:56–65. doi: 10.1038/ng.291. [[DOI](https://doi.org/10.1038/ng.291)] [[PMC free article](/articles/PMC2881676/)] [[PubMed](https://pubmed.ncbi.nlm.nih.gov/19060906/)] [[Google Scholar](https://scholar.google.com/scholar_lookup?journal=Nat%20Genet&title=Common%20variants%20at%2030%20loci%20contribute%20to%20polygenic%20dyslipidemia&author=S%20Kathiresan&volume=41&publication_year=2009&pages=56-65&pmid=19060906&doi=10.1038/ng.291&)] source
Not checked in the free run.
May combine two claims.
InterpretationreasoningThe association between advanced AMD and LIPC may not represent phenotypic correlation to or a causal effect of serum HDL but could indicate a shared underlying biologic mechanism involving the cholesterol pathway.
“Thus, the association between advanced AMD and *LIPC* may not represent phenotypic correlation to or a causal effect of serum HDL but could indicate a shared underlying biologic mechanism involving the cholesterol pathway.”
Quote in the paperSubstantial claim- Rests on an assumption: If the LIPC-AMD association were driven by HDL levels, all SNPs associated with HDL would show some association with AMD and in a consistent direction.
Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.
Study design and conductnone givenThe study conformed to the tenets of the Declaration of Helsinki and received approval from Institutional Review Boards; informed consent was signed by all participants.
“This study conformed to the tenets of the Declaration of Helsinki and received approval from Institutional Review Boards; informed consent was signed by all participants.”
Quote in the paperNot a substantial claimMay combine two claims.
Study design and conductown dataA preliminary χ2 association analysis observed λ ∼ 1.05, indicating that the samples were generally matched well for population ancestry but with some minor inflation remaining.
“We conducted a preliminary χ2 association analysis to determine the extent to which population stratification and other biases were affecting the samples and observed λ ∼ 1.05, indicating that the samples were generally matched well for population ancestry but with some minor inflation remaining”
Quote in the paperNot a substantial claimProbably not a substantial claim: may not pass S3 (load-bearing).
InterpretationreasoningHeterogeneity in rs10468017 association could be attributed to yet to be discovered genotype or phenotype correlations and ascertainment differences between samples.
“such heterogeneity could be attributed to yet to be discovered genotype or phenotype correlations and ascertainment differences between these samples.”
Quote in the paperNot a substantial claimMay combine two claims.
Study design and conductown dataThe UT and FR-CRET samples were not discounted based on modest heterogeneity, particularly because both samples showed association to complement loci.
“These samples were not discounted based on modest heterogeneity, particularly given the fact that both samples showed association to complement loci”
Quote in the paperSubstantial claim
The paper relies on this without support.
No large sample genome-wide association study had previously been undertaken to explain the remaining heritability of AMD and to identify other susceptibility loci.
“To date, however, no large sample genome-wide association study (GWAS) has been undertaken to attempt to explain the remaining heritability of AMD and to identify other susceptibility loci.”
The paper relies on this without support.
The T allele of the LIPC SNP increases HDL levels.
“The T allele of the *LIPC* SNP has been shown to increase HDL levels”
The paper relies on this without support.
If the LIPC-AMD association were driven by HDL levels, all SNPs associated with HDL would show some association with AMD and in a consistent direction.
“If the association between *LIPC* and AMD was driven by this phenotypic correlation, then all SNPs associated with HDL would likely show some level of association with AMD. Additionally, the direction of the effects would be consistent.”
The paper relies on this without support.
The MPM scan and the authors' scan are comparable enough that exchanging SNPs enables valid primary replication.
“SNPs with *P* < 10−3 from our GWAS discovery sample (*n* = 720 SNPs excluding previously associated regions) were exchanged with the MPM study group, which enabled us to use the two scans as primary replication efforts, and enhanced the power of each study.”
Claims other papers make about this one
Each is checked against this paper’s own text: does it say what the citing paper says it does?
Association has been demonstrated with several additional loci, each providing an entry-point into AMD biology and potential therapeutic targets.
“Association has also been demonstrated with several additional loci14–20, each providing an entry-point into AMD biology and potential therapeutic targets.”
From Seven new loci associated with age-related macular degeneration (2013) · cites this paper as [18]
All samples included in this study met quality control measures.
“All samples included in this study met quality control measures as described previously (15,16).”
From Common variants near FRK/COL10A1 and VEGFA are associated with advanced age-related macular degeneration (2011) · cites this paper as [15]
The TMMG meta-analysis data set consisted of 1242 cases and 492 controls from the Tufts/MGH GWAS Cohort Study, 1355 cases and 1076 controls from the MMAP Cohort Study, 1188 controls from the MIGen Consortium Study, and 1378 controls from the GAIN Schizophrenia Study.
“The TMMG meta-analysis data set consisted of: (i) 1242 cases and 492 controls from the Tufts/MGH GWAS Cohort Study (15), which were derived from ongoing AMD study protocols as described previously (8,15,24,35–37); (ii) 1355 cases and 1076 controls from the MMAP Cohort Study (16); (iii) 1188 controls from the (MIGen) Consortium Study (21) and (iv) 1378 controls from the GAIN Schizophrenia Study (22”
From Common variants near FRK/COL10A1 and VEGFA are associated with advanced age-related macular degeneration (2011) · cites this paper as [15]
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
Each contradiction between two passages listed here was confirmed by an independent check.
Odds ratio falls outside its reported confidence interval
MinorFor rs11755724, the reported meta-analysis odds ratio is 0.87, but its stated 95% confidence interval is 0.88-0.92. A confidence interval for that odds ratio should contain the estimate.
“| rs11755724 | 6 | 7063989 | A:G | 35.5% | 1 | 5.74E-04 | 1.34E-02 | 4.84E-02 | 3.12E-02 | 4.894 | 0.87 | 0.88–0.92 | 9.88E-07”
“meta OR, odds ratio for AMD combining all cohorts - A1 compared with A2; 95% CI, confidence interval for meta OR;”
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Seven new loci associated with age-related macular degeneration
The AMD Gene Consortium (2013) · Nature Genetics · doi:10.1038/ng.2578 · Cited by 788 · see citing works
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“Another collagen matrix pathway gene (COL8A1), which was implicated in our previous GWAS (15), also showed suggestive association to advanced AMD in our combined association analysis (P 1⁄4 9.”
BackgroundMethodInfluentialSelf-citationA new perspective on lipid research in age-related macular degeneration
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How does the macula protect itself from oxidative stress?
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Self-citation
- Authors
- Neale, B. M., Fagerness, J., Reynolds, R., Sobrin, L., Parker, M., Raychaudhuri, S., Tan, P. L., Oh, E. C., Merriam, J. E., Souied, E., Bernstein, P. S., Li, B., Frederick, J. M., Zhang, K., Brantley, M. A., Lee, A. Y., Zack, D. J., Campochiaro, B., Campochiaro, P., Ripke, S., Smith, R. T., Barile, G. R., Katsanis, N., Allikmets, R., Daly, M. J., & Seddon, J. M.
- Affiliations
- Broad Institute (US)
- Tufts University (US)
- Massachusetts Eye and Ear Infirmary (US)
- Johns Hopkins University (US)
- Columbia University (US)
- Hôpital Intercommunal de Créteil (FR)
- University of Utah (US)
- Washington University in St. Louis (US)
- Duke University (US)
- ORCID
- Neale, Benjamin M.
- Sobrin, Lucia
- Parker, Margaret
- Raychaudhuri, Soumya
- Tan, Perciliz L.
- Oh, Edwin C.
- Souied, Eric
- Bernstein, Paul S.
- Li, Binxing
- Frederick, Jeanne M.
- Zhang, Kang
- Brantley, Milam A.
- Lee, Aaron Y.
- Zack, Donald J.
- Campochiaro, Peter
- Ripke, Stephan
- Smith, R. Theodore
- Katsanis, Nicholas
- Allikmets, Rando
- Daly, Mark J.
- Seddon, Johanna M.
- Venue
- Proceedings of the National Academy of Sciences
- Publisher
- National Academy of Sciences
- Published
- 2010-04-12
- Volume
- 107
- Issue
- 16
- Pages
- 7395-7400
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- PMC
- PMC2867697
- OpenAlex
- W2133561122
- Semantic Scholar
- 0a74263a532d129fa975e4c182d94d8a637b7c33
- Cited by
- 442
- References
- 53
- Citations by year
- 2026: 11 · 2025: 12 · 2024: 22 · 2023: 15 · 2022: 16 · 2021: 20 · 2020: 21 · 2019: 23 · 2018: 25 · 2017: 21 · 2016: 29 · 2015: 33 · 2014: 34 · 2013: 47 · 2012: 51
- FWCI
- 55.83
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Locations
- Proceedings of the National Academy of Sciences (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- Research Explorer (The University of Manchester) (publishedVersion)
- Funders
- National Institutes of Health (5k12ey016335-17, 6u54rr020278-06)
- National Heart, Lung, and Blood Institute (R01HL087676)
- National Eye Institute (K12 EY16335, R01EY013435, R01 EY13435, K12-EY016335, R01 EY 11309, R01-EY11600, R01EY009769, R01EY011309, R24EY017404, R01EY011600)
- National Institute of Arthritis and Musculoskeletal and Skin Diseases (K08AR055688)
- National Center for Research Resources (U54-RR020278)
- Topics
- Health Sciences › Medicine › Ophthalmology › Retinal Diseases and Treatments
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Associations and Epidemiology
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Retinal Development and Disorders
- Keywords
- advanced age-related macular degeneration, hepatic lipase, HDL cholesterol, TIMP-3, copy number variation, genetic susceptibility, neovascular age-related macular degeneration, dry age-related macular degeneration, pleiotropy, ABCA1
- MeSH terms
- Delta-5 Fatty Acid Desaturase, Alleles, Gene Expression Regulation, Genotype, Humans, Lipase, Lipids, Cholesterol, HDL, Macular Degeneration, Risk, Case-Control Studies, Tissue Inhibitor of Metalloproteinase-3, Reverse Transcriptase Polymerase Chain Reaction, Oligonucleotide Array Sequence Analysis, Polymorphism, Single Nucleotide, Genome-Wide Association Study
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Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
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