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Adaptive and Maladaptive Clonal Hematopoiesis in Telomere Biology Disorders
Abstract
Purpose of review Telomere biology disorders (TBDs) are germline-inherited conditions characterized by reduction in telomerase function, accelerated shortening of telomeres, predisposition to organ-failure syndromes, and increased risk of neoplasms, especially myeloid malignancies. In normal cells, critically short telomeres trigger apoptosis and/or cellular senescence. However, the evolutionary mechanism by which TBD-related telomerase-deficient cells can overcome this fitness constraint remains elusive. Recent findings Preliminary data suggests the existence of adaptive somatic mosaic states characterized by variants in TBD-related genes and maladaptive somatic mosaic states that attempt to overcome hematopoietic fitness constraints by alternative methods leading to clonal hematopoiesis. TBDs are both rare and highly heterogeneous in presentation, and the association of TBD with malignant transformation is unclear. Understanding the clonal complexity and mechanisms behind TBD-associated molecular signatures that lead to somatic adaptation in the setting of defective hematopoiesis will help inform therapy and treatment for this set of diseases.
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“Within the context of telomere disorders, CH in the DDR pathway, particularly PPM1D, is common and thought to be compensatory, resulting in suppression of apoptosis triggered by telomere dysregulation30.”
From Germline genetic variation impacts clonal hematopoiesis landscape and progression to malignancy (2025) · cites this paper as [30]
Citations
Cites
Hallmarks of aging: An expanding universe
López-Otín, C., Blasco, M. A., Partridge, L., Serrano, M., & Kroemer, G. (2023) · Cell · doi:10.1016/j.cell.2022.11.001 · Cited by 6,549
A DNA damage checkpoint response in telomere-initiated senescence
Fagagna, F. D. D., Reaper, P. M., Clay-Farrace, L., Fiegler, H., Carr, P., von Zglinicki, T., Saretzki, G., Carter, N. P., & Jackson, S. P. (2003) · Nature · doi:10.1038/nature02118 · Cited by 2,917 · cited 1×
“…including ATM and ATR signaling, nuclear foci with DNA damage marks (including ɣ -H2AX, p53-binding protein 1 [ 53BP1 ], and mediator of DNA damage checkpoint protein 1 [ MDC1 ]), induction of cyclin-dependent kinase [ CDK ] inhibitors [p21/p16]), and usually arrest at cell cycle phase G1 [40–42].”
Blackburn, E. H., Epel, E. S., & Lin, J. (2015) · Science · doi:10.1126/science.aab3389 · Cited by 1,596 · cited 1×
“This deficiency can be resolved by the cellular ribonucleo-protein enzyme telomerase, which has the ability to add telomeric repeats back to the ends of chromosomes, elon-gating them and compensating for loss [11].”
Telomerase Mutations in Families with Idiopathic Pulmonary Fibrosis
Armanios, M. Y., Chen, J. J.-L., Cogan, J. D., Alder, J. K., Ingersoll, R. G., Markin, C., Lawson, W. E., Xie, M., Vulto, I., Phillips, J. A., et al. (2007) · New England Journal of Medicine · doi:10.1056/nejmoa066157 · Cited by 1,357
Longevity, Stress Response, and Cancer in Aging Telomerase-Deficient Mice
Rudolph, K. L., Chang, S., Lee, H.-W., Blasco, M., Gottlieb, G. J., Greider, C., & DePinho, R. A. (1999) · Cell · doi:10.1016/s0092-8674(00)80580-2 · Cited by 1,349 · cited 1×
“Aging in stem cell compartments involves time-sensitive accumulation of DNA damaging events, reduced telomere length, reduced autophagy, and epigenetic reprogramming [75, 92–96].”
Essential role of mouse telomerase in highly proliferative organs
Lee, H.-W., Blasco, M. A., Gottlieb, G. J., Horner, J. W., Greider, C. W., & DePinho, R. A. (1998) · Nature · doi:10.1038/33345 · Cited by 1,270
Clonal hematopoiesis in human aging and disease
Jaiswal, S., & Ebert, B. L. (2019) · Science · doi:10.1126/science.aan4673 · Cited by 1,156 · cited 2×
“TBDs also have been associated with an elevated risk of developing CH which has the capacity to clonally expand the blood compartment [23 •• , 25, 26, 32 •• ].”
InfluentialEvidence for a mitotic clock in human hematopoietic stem cells: loss of telomeric DNA with age.
Vaziri, H., Dragowska, W., Allsopp, R. C., Thomas, T. E., Harley, C. B., & Lansdorp, P. M. (1994) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.91.21.9857 · Cited by 1,132
Heiss, N. S., Knight, S. W., Vulliamy, T. J., Klauck, S. M., Wiemann, S., Mason, P. J., Poustka, A., & Dokal, I. (1998) · Nature Genetics · doi:10.1038/ng0598-32 · Cited by 976
The RNA component of telomerase is mutated in autosomal dominant dyskeratosis congenita
Vulliamy, T., Marrone, A., Goldman, F., Dearlove, A., Bessler, M., Mason, P. J., & Dokal, I. (2001) · Nature · doi:10.1038/35096585 · Cited by 960
Research works printed but not linked: 82
- McNally EJ, Luncsford PJ, Armanios M. Long telomeres and cancer risk: the price of cellular immortality. J Clin Invest. 2019;129(9):3474–81. · DOI
- Blackburn EH, Gall JG. A tandemly repeated sequence at the termini of the extrachromosomal ribosomal RNA genes in Tetrahymena. J Mol Biol. 1978;120(1):33–53. · DOI · Paper page
- Greider CW, Blackburn EH. Identification of a specific telomere terminal transferase activity in tetrahymena extracts. Cell. 1985;43(2, Part 1):405–13. · DOI · Paper page
- Blackburn EH, Greider CW, Szostak JW. Telomeres and telomerase: the path from maize, Tetrahymena and yeast to human cancer and aging. Nat Med. 2006;12(10):1133–8. · DOI · Paper page
- O’Sullivan RJ, Karlseder J. Telomeres: protecting chromosomes against genome instability. Nat Rev Mol Cell Biol. 2010;11(3):171–81. · DOI
- Harley CB. Telomere loss: mitotic clock or genetic time bomb? Mutat Res/DNAging. 1991;256(2):271–82. · DOI · Paper page
- Greider CW. Telomerase is processive. Mol Cell Biol. 1991;11(9):4572–80.
- Cesare AJ, Reddel RR. Alternative lengthening of telomeres: models, mechanisms and implications. Nat Rev Genet. 2010;11(5):319–30. · DOI
- Hayflick L, Moorhead PS. The serial cultivation of human diploid cell strains. Exp Cell Res. 1961;25(3):585–621. · DOI · Paper page
- van Deursen JM. The role of senescent cells in ageing. Nature. 2014;509(7501):439–46. · DOI · Paper page
- Dunham MA, Neumann AA, Fasching CL, Reddel RR. Telomere maintenance by recombination in human cells. Nat Genet. 2000;26(4):447–50. · DOI · Paper page
- Gravekamp C, Chandra D. Aging and cancer vaccines. Crit Rev Oncog. 2013;18(6):585–95. · DOI
- Vulliamy TJ, Knight SW, Mason PJ, Dokal I. Very short telomeres in the peripheral blood of patients with X-linked and autosomal dyskeratosis congenita. Blood Cells Mol Dis. 2001;27(2):353–7. · DOI
- Bertuch AA. The molecular genetics of the telomere biology disorders. RNA Biol. 2016;13(8):696–706. · DOI
- Savage SA, Bertuch AA. The genetics and clinical manifestations of telomere biology disorders. Genet Med. 2010;12(12):753–64. · DOI
- Feurstein S, Adegunsoye A, Mojsilovic D, Vij R, West DePersia AH, Rajagopal PS, et al. Telomere biology disorder prevalence and phenotypes in adults with familial hematologic and/or pulmonary presentations. Blood Adv. 2020;4(19):4873–86. · DOI
- Mangaonkar AA, Patnaik MM. Short telomere syndromes in clinical practice: bridging bench and bedside. Mayo Clin Proc. 2018;93(7):904–16. · DOI
- Alter BP, Rosenberg PS, Giri N, Baerlocher GM, Lansdorp PM, Savage SA. Telomere length is associated with disease severity and declines with age in dyskeratosis congenita. Haematologica. 2012;97(3):353–9. · DOI · Paper page
- Blanche PA, Neelam G, Sharon AS, Philip SR. Cancer in the National Cancer Institute inherited bone marrow failure syndrome cohort after fifteen years of follow-up. Haematologica. 2018;103(1):30–9. · DOI
- Schratz KE, Haley L, Danoff SK, Blackford AL, DeZern AE, Gocke CD, et al. Cancer spectrum and outcomes in the Mendelian short telomere syndromes. Blood. 2020;135(22):1946–56. Description of the clinical outcomes of the TBD cohort assembled at Johns Hopkins. First report indicating that TBD patients present with increased CH and a different mutational signature compared to ARCH. · DOI
- Alter BP, Giri N, Savage SA, Rosenberg PS. Cancer in the National Cancer Institute inherited bone marrow failure syndrome cohort after fifteen years of follow-up. Haematologica. 2018;103(1):30–9. Description of the clinical outcomes of the TBD cohort assembled by the NIH describing higher risk to develop MN and specific characteristics of these patients. · DOI
- Schratz KE, Armanios M. Cancer and myeloid clonal evolution in the short telomere syndromes. Curr Opin Genet Dev. 2020;60:112–8. · DOI
- Mitchell E, Spencer Chapman M, Williams N, Dawson KJ, Mende N, Calderbank EF, et al. Clonal dynamics of haematopoiesis across the human lifespan. Nature. 2022;606(7913):343–50. · DOI · Paper page
- Kusne Y, Xie Z, Patnaik MM. Clonal hematopoiesis: molecular and clinical implications. Leuk Res. 2022;113:106787. · DOI
- Gregory JJ Jr, Wagner JE, Verlander PC, Levran O, Batish SD, Eide CR, et al. Somatic mosaicism in Fanconi anemia: evidence of genotypic reversion in lymphohematopoietic stem cells. Proc Natl Acad Sci USA. 2001;98(5):2532–7. · DOI
- Myers KC, Furutani E, Weller E, Siegele B, Galvin A, Arsenault V, et al. Clinical features and outcomes of patients with Shwachman-Diamond syndrome and myelodysplastic syndrome or acute myeloid leukaemia: a multicentre, retrospective, cohort study. Lancet Haematol. 2020;7(3):e238–46. · DOI
- Gutierrez-Rodrigues F, Groarke EM, Clé DV, Patel BA, Donaires FS, Spitofsky N, et al. Clonal hematopoiesis in telomere biology disorders associates with the underlying germline defect and somatic mutations in POT1, PPM1D, and TERT promoter. Blood. 2021;138(Supplement 1):1111-. Description in more detail of the somatic mutational landscape observed in the larger number of TBD patients to date. Possible association between specific somatic events and germline mutations. · DOI
- Ferrer A, Mangaonkar AA, Patnaik MM. Clonal hematopoiesis and myeloid neoplasms in the context of telomere biology disorders. Curr Hematol Malig Rep. 2022;17(3):61–8. · DOI · Paper page
- Pritzl SL, Gurney M, Badar T, Ferrer A, Lasho T, Finke C, et al. Clinical and molecular spectrum and prognostic outcomes of U2AF1 mutant clonal hematopoiesis- a prospective mayo clinic cohort study. Leuk Res. 2023;125:107007. · DOI
- Schratz KE, Gaysinskaya V, Cosner ZL, DeBoy EA, Xiang Z, Kasch-Semenza L, et al. Somatic reversion impacts myelodysplastic syndromes and acute myeloid leukemia evolution in the short telomere disorders. J Clin Invest. 2021;131(18). Study of genetic rescue in the development of MDS/AML in TBD patients. · DOI
- Maryoung L, Yue Y, Young A, Newton CA, Barba C, van Oers NS, et al. Somatic mutations in telomerase promoter counterbalance germline loss-of-function mutations. J Clin Invest. 2017;127(3):982–6. · DOI
- Revy P, Kannengiesser C, Bertuch AA. Genetics of human telomere biology disorders. Nat Rev Genet. 2023;24(2):86–108. · DOI
- Takai H, Smogorzewska A, de Lange T. DNA damage foci at dysfunctional telomeres. Curr Biol. 2003;13(17):1549–56. · DOI · Paper page
- Sfeir A, de Lange T. Removal of shelterin reveals the telomere end-protection problem. Science. 2012;336(6081):593–7. · DOI
- Lazzerini-Denchi E, Sfeir A. Stop pulling my strings — what telomeres taught us about the DNA damage response. Nat Rev Mol Cell Biol. 2016;17(6):364–78. · DOI
- Kiss T, Fayet-Lebaron E, Jády BE. Box H/ACA small ribonucleoproteins. Mol Cell. 2010;37(5):597–606. · DOI
- Darzacq X, Kittur N, Roy S, Shav-Tal Y, Singer RH, Meier UT. Stepwise RNP assembly at the site of H/ACA RNA transcription in human cells. J Cell Biol. 2006;173(2):207–18. · DOI
- Schmidt JC, Cech TR. Human telomerase: biogenesis, trafficking, recruitment, and activation. Genes Dev. 2015;29(11):1095–105. · DOI
- Roake CM, Artandi SE. Regulation of human telomerase in homeostasis and disease. Nat Rev Mol Cell Biol. 2020;21(7):384–97. · DOI
- Bodnar AG, Ouellette M, Frolkis M, Holt SE, Chiu CP, Morin GB, et al. Extension of life-span by introduction of telomerase into normal human cells. Science. 1998;279(5349):349–52. · DOI · Paper page
- Chiba K, Lorbeer FK, Shain AH, McSwiggen DT, Schruf E, Oh A, et al. Mutations in the promoter of the telomerase gene TERT contribute to tumorigenesis by a two-step mechanism. Science. 2017;357(6358):1416–20. · DOI
- Gutierrez-Rodrigues F, Donaires FS, Pinto A, Vicente A, Dillon LW, Clé DV, et al. Pathogenic TERT promoter variants in telomere diseases. Genet Med. 2019;21(7):1594–602. · DOI
- Du H-Y, Pumbo E, Manley P, Field JJ, Bayliss SJ, Wilson DB, et al. Complex inheritance pattern of dyskeratosis congenita in two families with 2 different mutations in the telomerase reverse transcriptase gene. Blood. 2008;111(3):1128–30. · DOI
- Aspesi A, Vallero S, Rocci A, Pavesi E, Lanciotti M, Ramenghi U, et al. Compound heterozygosity for two new TERT mutations in a patient with aplastic anemia. Pediatr Blood Cancer. 2010;55(3):550–3. · DOI
- Gramatges MM, Qi X, Sasa GS, Chen JJL, Bertuch AA. A homozygous telomerase T-motif variant resulting in markedly reduced repeat addition processivity in siblings with Hoyeraal Hreidarsson syndrome. Blood. 2013;121(18):3586–93. · DOI
- Niaz A, Truong J, Manoleras A, Fox LC, Blombery P, Vasireddy RS, et al. Functional interaction between compound heterozygous TERT mutations causes severe telomere biology disorder. Blood Adv. 2022;6(12):3779–91. · DOI
- Çepni E, Satkın NB, Moheb LA, Rocha ME, Kayserili H. Biallelic TERT variant leads to Hoyeraal-Hreidarsson syndrome with additional dyskeratosis congenita findings. Am J Med Genet A. 2022;188(4):1226–32. · DOI
- Stockklausner C, Raffel S, Klermund J, Bandapalli OR, Beier F, Brümmendorf TH, et al. A novel autosomal recessive TERT T1129P mutation in a dyskeratosis congenita family leads to cellular senescence and loss of CD34+ hematopoietic stem cells not reversible by mTOR-inhibition. Aging (Albany NY). 2015;7(11):911. · DOI
- Marrone A, Walne A, Tamary H, Masunari Y, Kirwan M, Beswick R, et al. Telomerase reverse-transcriptase homozygous mutations in autosomal recessive dyskeratosis congenita and Hoyeraal-Hreidarsson syndrome. Blood. 2007;110(13):4198–205. · DOI
- Nguyen THD, Tam J, Wu RA, Greber BJ, Toso D, Nogales E, et al. Cryo-EM structure of substrate-bound human telomerase holoenzyme. Nature. 2018;557(7704):190–5. · DOI
- Knight SW, Heiss NS, Vulliamy TJ, Greschner S, Stavrides G, Pai GS, et al. X-linked dyskeratosis congenita is predominantly caused by missense mutations in the DKC1 gene. Am J Human Genet. 1999;65(1):50–8. · DOI
- Benyelles M, O’Donohue M-F, Kermasson L, Lainey E, Borie R, Lagresle-Peyrou C, et al. NHP2 deficiency impairs rRNA biogenesis and causes pulmonary fibrosis and Høyeraal-Hreidarsson syndrome. Hum Mol Genet. 2020;29(6):907–22. · DOI
- Palm W, de Lange T. How shelterin protects mammalian telomeres. Annu Rev Genet. 2008;42:301–34. · DOI · Paper page
- Harel I, Benayoun BA, Machado B, Singh PP, Hu CK, Pech MF, et al. A platform for rapid exploration of aging and diseases in a naturally short-lived vertebrate. Cell. 2015;160(5):1013–26. · DOI · Paper page
- Meier B, Clejan I, Liu Y, Lowden M, Gartner A, Hodgkin J, et al. trt-1 is the Caenorhabditis elegans catalytic subunit of telomerase. PLoS Genet. 2006;2(2): e18. · DOI
- Blasco MA, Lee H-W, Hande MP, Samper E, Lansdorp PM, DePinho RA, et al. Telomere shortening and tumor formation by mouse cells lacking telomerase RNA. Cell. 1997;91(1):25–34. · DOI · Paper page
- Niewisch MR, Giri N, McReynolds LJ, Alsaggaf R, Bhala S, Alter BP, et al. Disease progression and clinical outcomes in telomere biology disorders. Blood. 2022;139(12):1807–19. · DOI
- Alder JK, Armanios M. Telomere-mediated lung disease. Physiol Rev. 2022;102(4):1703–20. · DOI · Paper page
- Walne AJ, Dokal I. Advances in the understanding of dyskeratosis congenita. Br J Haematol. 2009;145(2):164–72. · DOI
- Armanios M. The role of telomeres in human disease. Annu Rev Genomics Hum Genet. 2022;23:363–81. · DOI
- Knight S, Vulliamy T, Copplestone A, Gluckman E, Mason P, Dokal I. Dyskeratosis Congenita (DC) Registry: identification of new features of DC. Br J Haematol. 1998;103(4):990–6. · DOI
- Takai H, Jenkinson E, Kabir S, Babul-Hirji R, Najm-Tehrani N, Chitayat DA, et al. A POT1 mutation implicates defective telomere end fill-in and telomere truncations in Coats plus. Genes Dev. 2016;30(7):812–26. · DOI
- Kermasson L, Churikov D, Awad A, Smoom R, Lainey E, Touzot F, et al. Inherited human Apollo deficiency causes severe bone marrow failure and developmental defects. Blood. 2022;139(16):2427–40. · DOI
- Polvi A, Linnankivi T, Kivelä T, Herva R, Keating James P, Mäkitie O, et al. Mutations in CTC1, encoding the CTS telomere maintenance complex component 1, cause cerebroretinal microangiopathy with calcifications and cysts. Am J Human Genet. 2012;90(3):540–9. · DOI
- Simon AJ, Lev A, Zhang Y, Weiss B, Rylova A, Eyal E, et al. Mutations in STN1 cause coats plus syndrome and are associated with genomic and telomere defects. J Exp Med. 2016;213(8):1429–40. · DOI
- Holme H, Hossain U, Kirwan M, Walne A, Vulliamy T, Dokal I. Marked genetic heterogeneity in familial myelodysplasia/acute myeloid leukaemia. Br J Haematol. 2012;158(2):242–8. · DOI
- Furutani E, Shimamura A. Genetic predisposition to MDS: diagnosis and management. Hematol Am Soc Hematol Educ Program. 2019;2019(1):110–9. · DOI
- Beerman I. Accumulation of DNA damage in the aged hematopoietic stem cell compartment. Semin Hematol. 2017;54(1):12–8. · DOI
- Mollica L, Fleury I, Belisle C, Provost S, Roy DC, Busque L. No association between telomere length and blood cell counts in elderly individuals. J Gerontol A Biol Sci Med Sci. 2009;64(9):965–7. · DOI
- Kramer A, Challen GA. The epigenetic basis of hematopoietic stem cell aging. Semin Hematol. 2017;54(1):19–24. · DOI
- Papaemmanuil E, Gerstung M, Malcovati L, Tauro S, Gundem G, Van Loo P, et al. Clinical and biological implications of driver mutations in myelodysplastic syndromes. Blood. 2013;122(22):3616–27. · DOI · Paper page
- Kaner J, Desai P, Mencia-Trinchant N, Guzman ML, Roboz GJ, Hassane DC. Clonal Hematopoiesis and Premalignant Diseases. Cold Spring Harb Perspect Med. 2020;10(4):a035675. · DOI
- Mitchell SR, Gopakumar J, Jaiswal S. Insights into clonal hematopoiesis and its relation to cancer risk. Curr Opin Genet Dev. 2021;66:63–9. · DOI
- Jaiswal S, Fontanillas P, Flannick J, Manning A, Grauman PV, Mar BG, et al. Age-related clonal hematopoiesis associated with adverse outcomes. N Engl J Med. 2014;371(26):2488–98. · DOI · Paper page
- Ferrer A, Lasho T, Fernandez JA, Steinauer NP, Simon RA, Finke CM, et al. Patients with telomere biology disorders show context specific somatic mosaic states with high frequency of U2AF1 variants. Am J Hematol. 2023;98(12):E357–9. · DOI
- Revy P, Kannengiesser C, Fischer A. Somatic genetic rescue in Mendelian haematopoietic diseases. Nat Rev Genet. 2019;20(10):582–98. · DOI
- Revy P, Kannengiesser C, Fischer A. Somatic genetic rescue in Mendelian haematopoietic diseases. Nat Rev Genet. 2019;20(10):582–98. · DOI
- Tsai FD, Lindsley RC. Clonal hematopoiesis in the inherited bone marrow failure syndromes. Blood. 2020;136(14):1615–22.
- Perdigones N, Perin JC, Schiano I, Nicholas P, Biegel JA, Mason PJ, et al. Clonal hematopoiesis in patients with dyskeratosis congenita. Am J Hematol. 2016;91(12):1227–33. · DOI
- Mangaonkar AA, Ferrer A, Pinto EVF, Cousin MA, Kuisle RJ, Klee EW, et al. Clinical correlates and treatment outcomes for patients with short telomere syndromes. Mayo Clin Proc. 2018;93(7):834–9. · DOI
- Lee M, Roos P, Sharma N, Atalar M, Evans TA, Pellicore MJ, et al. Systematic computational identification of variants that activate exonic and intronic cryptic splice sites. Am J Human Genet. 2017;100(5):751–65. · DOI
- Marioni RE, Shah S, McRae AF, Chen BH, Colicino E, Harris SE, et al. DNA methylation age of blood predicts all-cause mortality in later life. Genome Biol. 2015;16(1):25. · DOI · Paper page
Cited by
Germline genetic variation impacts clonal hematopoiesis landscape and progression to malignancy
Liu, J., Tran, D., Xue, L., Wiley, B. J., Vlasschaert, C., Watson, C. J., MacGregor, H. A. J., Zong, X., Chan, I. C. C., Das, I., et al. (2025) · Nature Genetics · doi:10.1038/s41588-025-02250-x · Cited by 33
Metadata
- Authors
- Lasho, T., & Patnaik, M. M.
- Venue
- Current Hematologic Malignancy Reports
- Published
- 2023-12-14
- Volume
- 19
- Issue
- 1
- Pages
- 35-44
- ISSN
- 1558-8211
- 1558-822X
- Cited by
- 7
- References
- 29
- Language
- en
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