Functional and Clinical Characterization of Variants of Uncertain Significance Identifies a Hotspot for Inactivating Missense Variants in RAD51C
[Paper-level Aggregated] PMCID: PMC10390864
Evidence Type(s): Functional, Oncogenic, Predictive, Prognostic
Justification: Functional: The study assessed the influence of various RAD51C missense mutations on HDR DNA repair activity, categorizing them as deleterious, hypomorphic, or neutral based on their effects on HDR scores, indicating their functional impact on DNA repair mechanisms. Oncogenic: The loss of RAD51C function promotes HR deficiency and sensitizes cells to cisplatin and olaparib, suggesting that variants affecting RAD51C function may contribute to oncogenic processes by impairing DNA repair and influencing drug sensitivity in cancer cells. Predictive: The study evaluated the sensitivity of cells with different RAD51C variants to cisplatin and olaparib, indicating that specific variants can predict responses to these drugs, which is crucial for therapeutic decision-making in cancer treatment. Prognostic: The correlation between RAD51C variant status and drug response (IC50 values) suggests that these variants may serve as prognostic markers for treatment outcomes in patients receiving cisplatin or olaparib.
Gene→Variant (gene-first): RAD51C(5889):16 A RAD51C(5889):C135Y RAD51C(5889):E94K RAD51C(5889):G130R RAD51C(5889):G302V RAD51C(5889):K131 RAD51C(5889):L138F RAD51C(5889):P21S RAD51C(5889):Q133E RAD51C(5889):R168 RAD51C(5889):R168G RAD51C(5889):R312 RAD51C(5889):R312W RAD51C(5889):T132I RAD51C(5889):T132R RAD51D(5892):T86I RAD51C(5889):V140E RAD51C(5889):p.Cys135Tyr RAD51C(5889):p.Thr132Ile RAD51C(5889):p.Val140Glu RAD51C(5889):A126T RAD51C(5889):D159N RAD51C(5889):G125V RAD51C(5889):G153D RAD51C(5889):G264S RAD51C(5889):G264V RAD51C(5889):G3R RAD51C(5889):L219S RAD51C(5889):Q143R RAD51C(5889):R214C RAD51C(5889):R258H RAD51C(5889):R366Q RAD51C(5889):T287A RAD51C(5889):V169A RAD51C(5889):p.Arg214Cys RAD51C(5889):p.Arg258His RAD51C(5889):p.Arg312Trp RAD51C(5889):p.Arg366Gln RAD51C(5889):p.Asp159Asn RAD51C(5889):p.Gln143Arg RAD51C(5889):p.Gly125Val RAD51C(5889):p.Gly153Asp RAD51C(5889):p.Gly264Ser RAD51C(5889):p.Gly264Val RAD51C(5889):p.Gly3Arg RAD51C(5889):p.Leu219Ser RAD51C(5889):p.Thr287Ala RAD51C(5889):p.Val169Ala RAD51C(5889):D109Y RAD51C(5889):G162E RAD51C(5889):L27P RAD51C(5889):S163R RAD51C(5889):T336P RAD51C(5889):p.Gly162Glu RAD51C(5889):p.Ser163Arg RAD51C(5889):p.Thr336Pro RAD51D(5892):p.Thr86Ile RAD51C(5889):A155E RAD51C(5889):C147Y RAD51(5888):D108G RAD51C(5889):D159Y RAD51C(5889):G306R RAD51C(5889):p.Ala155Glu RAD51(5888):p.Asp108Gly RAD51C(5889):p.Asp109Tyr RAD51C(5889):p.Asp159Tyr RAD51C(5889):p.Cys147Tyr RAD51C(5889):p.Gly306Arg RAD51C(5889):p.Pro21Ser RAD51C(5889):p.Glu94Lys RAD51C(5889):K131I
Genes: RAD51C(5889) RAD51D(5892) RAD51(5888)
Variants: 16 A C135Y E94K G130R G302V K131 L138F P21S Q133E R168 R168G R312 R312W T132I T132R T86I V140E p.Cys135Tyr p.Thr132Ile p.Val140Glu A126T D159N G125V G153D G264S G264V G3R L219S Q143R R214C R258H R366Q T287A V169A p.Arg214Cys p.Arg258His p.Arg312Trp p.Arg366Gln p.Asp159Asn p.Gln143Arg p.Gly125Val p.Gly153Asp p.Gly264Ser p.Gly264Val p.Gly3Arg p.Leu219Ser p.Thr287Ala p.Val169Ala D109Y G162E L27P S163R T336P p.Gly162Glu p.Ser163Arg p.Thr336Pro p.Thr86Ile A155E C147Y D108G D159Y G306R p.Ala155Glu p.Asp108Gly p.Asp109Tyr p.Asp159Tyr p.Cys147Tyr p.Gly306Arg p.Pro21Ser p.Glu94Lys K131I