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Cosmic signature SBS39 is associated with homologous recombination deficiency

Ding, Y.; Tao, S.; Mao, A.; Ziv, E.; Neuhausen, S. L.

2024-10-27 genetic and genomic medicine
10.1101/2024.10.23.24316019 medRxiv
Show abstract

Cosmic single-base-substitution mutational signature 3 (SBS3) is associated with hereditary and somatic mutations in genes involved in homologous recombination deficiency (HRD) and predicts response to PARPi. The COSMIC database was updated from 30 SBS signatures in version 2.0 (V2.0) to 86 SBS signatures in Version 3.4 (V3.4). We found that SBS3 in V3.4 was poorly associated and SBS39 was strongly associated with germline and somatic mutations in HRD genes and should be classified as an HRD signature.

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