Identical splicing of aberrant epidermal growth factor receptor transcripts from amplified rearranged genes in human glioblastomas
Open accessAbstract
The epidermal growth factor receptor gene has been found to be amplified and rearranged in human glioblastomas in vivo. Here we present the sequence across a splice junction of aberrant epidermal growth factor receptor transcripts derived from corresponding and uniquely rearranged genes that are coamplified and coexpressed with non-rearranged epidermal growth factor receptor genes in six primary human glioblastomas. Each of these six tumors contains aberrant transcripts derived from identical splicing of exon 1 to exon 8 as a consequence of a deletion-rearrangement of the amplified gene, the extent of which is variable among these tumors. In spite of this intertumoral variability, each intragenic rearrangement results in loss of the same 801 coding bases (exons 2-7) and creation of a new codon at the novel splice site in their corresponding transcripts. These rearrangements do not, however, affect the mRNA sequence for the signal peptide, the first five codons, or the reading frame downstream of the rearrangement.
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EGFRvIII is found in about 40% of high-grade gliomas with wild-type EGFR amplification.
“An oncogenic mutation that deletes exons 2–7 in the receptor ectodomain, denoted EGFRvIII, is found in about 40% of high-grade gliomas with wild-type EGFR amplification (Sugawa et al., 1990).”
From ERBB Receptors: From Oncogene Discovery to Basic Science to Mechanism-Based Cancer Therapeutics (2014) · cites this paper as Sugawa et al., 1990
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- Authors
- Sugawa, N., Ekstrand, A. J., James, C. D., & Collins, V. P.
- Affiliations
- Ludwig Cancer Research (SE)
- ORCID
- James, C D
- Venue
- Proceedings of the National Academy of Sciences
- Publisher
- National Academy of Sciences
- Published
- 1990-11
- Volume
- 87
- Issue
- 21
- Pages
- 8602-8606
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- PMC
- PMC55005
- OpenAlex
- W2106161829
- Cited by
- 594
- References
- 33
- Citations by year
- 2026: 4 · 2025: 5 · 2024: 13 · 2023: 17 · 2022: 13 · 2021: 22 · 2020: 15 · 2019: 14 · 2018: 13 · 2017: 23 · 2016: 16 · 2015: 21 · 2014: 30 · 2013: 30 · 2012: 27
- FWCI
- 6.89
- Type
- journal article
- Language
- en
- Open access
- green
- europepmc.org
- Locations
- Proceedings of the National Academy of Sciences (publishedVersion)
- Europe PMC (PubMed Central) (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Medicine › Genetics › Glioma Diagnosis and Treatment
- Health Sciences › Medicine › Oncology › HER2/EGFR in Cancer Research
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA Research and Splicing
- Keywords
- epidermal growth factor receptor, gene amplification, glioblastoma, aberrant transcripts, alternative splicing, exon deletion, reading frame, signal peptide
- MeSH terms
- Amino Acid Sequence, Base Sequence, DNA, Neoplasm, Exons, Glioma, Humans, Introns, Molecular Sequence Data, RNA Splicing, Transcription, Genetic, Blotting, Northern, Gene Rearrangement, Polymerase Chain Reaction, ErbB Receptors
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