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Protein-truncating variations in the breast cancer susceptibility gene CHEK2 exhibit a moderately heightened risk of breast cancer. In contrast, the associated breast cancer risk for missense variants of uncertain significance (VUS) in CHEK2 often remains ambiguous. To aid in their classification, functional assays assessing the impact of missense VUS on CHK2 protein function have been conducted. This discussion delves into these functional analyses, consistently revealing a connection between impaired protein function and an increased risk of breast cancer. Overall, these findings imply that damaging CHEK2 missense VUS are linked to a breast cancer risk similar to that of protein-truncating variants. This underscores the importance of expanding the functional characterization of CHEK2 missense VUS to gain a deeper understanding of the associated cancer risk.

  • O'qishlar soni 26
  • Nashr sanasi 05-01-2024
  • Asosiy tilIngliz
  • Sahifalar221-234
English

Protein-truncating variations in the breast cancer susceptibility gene CHEK2 exhibit a moderately heightened risk of breast cancer. In contrast, the associated breast cancer risk for missense variants of uncertain significance (VUS) in CHEK2 often remains ambiguous. To aid in their classification, functional assays assessing the impact of missense VUS on CHK2 protein function have been conducted. This discussion delves into these functional analyses, consistently revealing a connection between impaired protein function and an increased risk of breast cancer. Overall, these findings imply that damaging CHEK2 missense VUS are linked to a breast cancer risk similar to that of protein-truncating variants. This underscores the importance of expanding the functional characterization of CHEK2 missense VUS to gain a deeper understanding of the associated cancer risk.

Muallifning F.I.Sh. Lavozimi Tashkilot nomi
1 Xudoyberdiyeva N.V. Assistant teacher “Medical faculty” of Alfraganus University
Havola nomi
1 S. Matsuoka, et al. Linkage of ATM to cell cycle regulation by the Chk2 protein kinase Science, 282 (1998), pp. 1893-1897 N.H. Chehab, et al. Chk2/hCds1 functions as a DNA damage checkpoint in G1 by stabilizing p53 Genes Dev., 14 (2000), pp. 278-288 D.W. Bell, et al. Heterozygous germ line hCHK2 mutations in Li–Fraumeni syndrome Science, 286 (1999), pp. 2528-2531 K. Schneider, et al. Li–Fraumeni syndrome GeneReviews (1999) Published online January 19, 1999 https://www.ncbi.nlm.nih.gov/books/NBK1311/ K.A. McBride, et al. Li–Fraumeni syndrome: cancer risk assessment and clinical management Nat. Rev. Clin. Oncol., 11 (2014), pp. 260-271 Breast Cancer Association Consortium, et al. Breast cancer risk genes – association analysis in more than 113,000 women N. Engl. J. Med., 384 (2021), pp. 428-439 F.J. Couch, et al. Associations between cancer predisposition testing panel genes and breast cancer JAMA Oncol., 3 (2017), pp. 1190-1196 B. Decker, et al. Rare, protein-truncating variants in ATM, CHEK2 and PALB2, but not XRCC2, are associated with increased breast cancer risks J. Med. Genet., 54 (2017), pp. 7327-7341 J. Hauke, et al. Gene panel testing of 5589 BRCA1/2-negative index patients with breast cancer in a routine diagnostic setting: results of the German Consortium for Hereditary Breast and Ovarian Cancer Cancer Med., 7 (2018), pp. 1349-1358 H. Meijers-Heijboer, et al. Low-penetrance susceptibility to breast cancer due to CHEK2*1100delC in noncarriers of BRCA1 or BRCA2 mutations Nat. Genet., 31 (2002), pp. 555-559 M. Weischer, et al. Increased risk of breast cancer associated with CHEK2*1100delC J. Clin. Oncol., 25 (2007), pp. 57-63 C. Cybulski, et al. CHEK2 is a multiorgan cancer susceptibility gene Am. J. Hum. Genet., 75 (2004), pp. 1131-1135 L. Stolarova, et al. CHEK2 germline variants in cancer predisposition: stalemate rather than checkmate Cells, 9 (2020), p. 2675 M.J. Landrum, et al. ClinVar: public archive of relationships among sequence variation and human phenotype Nucleic Acids Res., 42 (2014), pp. D980-D985 S.E. Brnich, et al. Recommendations for application of the functional evidence PS3/BS3 criterion using the ACMG/AMP sequence variant interpretation framework Genome Med, 12 (2019), p. 3 D.W. Bell, et al. Genetic and functional analysis of CHEK2 (CHK2) variants in multiethnic cohorts Int. J. Cancer, 121 (2007), pp. 2661-2667 R. Boonen, et al. Functional analysis identifies damaging CHEK2 missense variants associated with increased cancer risk Cancer Res., 82 (2022), pp. 615-631 R. Chrisanthar, et al. CHEK2 mutations affecting kinase activity together with mutations in TP53 indicate a functional pathway associated with resistance to epirubicin in primary breast cancer PLoS One, 3 (2008), Article e3062 R. Cuella-Martin, et al. Functional interrogation of DNA damage response variants with base editing screens Cell, 184 (2021), pp. 1081-1097 A. Delimitsou, et al. Functional characterization of CHEK2 variants in a Saccharomyces cerevisiae system Hum. Mutat., 40 (2019), pp. 631-648 J. Falck, et al. The ATM–Chk2–Cdc25A checkpoint pathway guards against radioresistant DNA synthesis Nature, 410 (2001), pp. 842-847 P. Kleiblova, et al. Identification of deleterious germline CHEK2 mutations and their association with breast and ovarian cancer Int. J. Cancer, 145 (2019), pp. 1782-1797 S.B. Lee, et al. Destabilization of CHK2 by a missense mutation associated with Li–Fraumeni Syndrome Cancer Res., 61 (2001), pp. 8062-8067 W. Roeb, et al. Response to DNA damage of CHEK2 missense mutations in familial breast cancer Hum. Mol. Genet., 21 (2012), pp. 2738-2744 A. Shaag, et al. Functional and genomic approaches reveal an ancient CHEK2 allele associated with breast cancer in the Ashkenazi Jewish population Hum. Mol. Genet., 14 (2005), pp. 555-563 M.D. Tischkowitz, et al. Identification and characterization of novel SNPs in CHEK2 in Ashkenazi Jewish men with prostate cancer N. Wang, et al. A novel recurrent CHEK2 Y390C mutation identified in high-risk Chinese breast cancer patients impairs its activity and is associated with increased breast cancer risk Oncogene, 34 (2015), pp. 5198-5205 X. Wu, et al. Characterization of tumor-associated Chk2 mutations J. Biol. Chem., 276 (2001), pp. 2971-2974 J. Ahn, et al. The Chk2 protein kinase DNA Repair (Amst), 3 (2004), pp. 1039-1047 J. Bartek, J. Lukas Chk1 and Chk2 kinases in checkpoint control and cancer Cancer Cell, 3 (2003), pp. 421-429 M.B. Kastan, J. Bartek Cell-cycle checkpoints and cancer Nature, 432 (2004), pp. 316-323 J. Li, et al. Structural and functional versatility of the FHA domain in DNA-damage signaling by the tumor suppressor kinase Chk2 Mol. Cell, 9 (2002), pp. 1045-1054 J. Zhang, et al. Chk2 phosphorylation of BRCA1 regulates DNA double-strand break repair Mol. Cell. Biol., 24 (2004), pp. 708-718 C. Hu, et al. Roles of Kruppel-associated box (KRAB)-associated co-repressor KAP1 Ser-473 phosphorylation in DNA damage response J. Biol. Chem., 287 (2012), pp. 18937-18952 M.C. Lanz, et al. DNA damage kinase signaling: checkpoint and repair at 30 years EMBO J., 38 (2019), Article e101801 X. Zhao, et al. The ribonucleotide reductase inhibitor Sml1 is a new target of the Mec1/Rad53 kinase cascade during growth and in response to DNA damage EMBO J., 20 (2001), pp. 3544-3553
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