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| Gene | BARD1 |
| Variant | G491R |
| Impact List | missense |
| Protein Effect | loss of function |
| Gene Variant Descriptions | BARD1 G491R lies within ANK repeat 2 of the Bard1 protein (UniProt.org). G491R results in decreased interaction with the ubiquitinated nucleosomal core particle (PMID: 34102105), Brca1, Palb2, and Rad51c, impaired homology-directed DNA repair activity, altered subcellular localization, decreased DNA repair post-irradiation, decreased H2A ubiquitination, and increased sensitivity to olaparib and cisplatin treatment in cultured cells (PMID: 39387837). |
| Associated Drug Resistance | |
| Category Variants Paths |
BARD1 mutant BARD1 inact mut BARD1 G491R |
| Transcript | NM_000465.4 |
| gDNA | chr2:g.214767579C>T |
| cDNA | c.1471G>A |
| Protein | p.G491R |
| Source Database | RefSeq |
| Genome Build | GRCh38/hg38 |
| Transcript | gDNA | cDNA | Protein | Source Database | Genome Build |
|---|---|---|---|---|---|
| XM_047445350.1 | chr2:g.214767579C>T | c.1471G>A | p.G491R | RefSeq | GRCh38/hg38 |
| NM_000465.4 | chr2:g.214767579C>T | c.1471G>A | p.G491R | RefSeq | GRCh38/hg38 |
| Molecular Profile | Indication/Tumor Type | Response Type | Therapy Name | Approval Status | Evidence Type | Efficacy Evidence | References |
|---|---|---|---|---|---|---|---|
| BARD1 G491R | breast cancer | sensitive | Cisplatin | Preclinical - Cell culture | Actionable | In a preclinical study, a breast cancer cell line expressing BARD1 G491R was sensitive to Platinol (cisplatin) in culture, demonstrating decreased colony formation (PMID: 39387837). | 39387837 |
| BARD1 G491R | breast cancer | sensitive | Olaparib | Preclinical - Cell culture | Actionable | In a preclinical study, a breast cancer cell line expressing BARD1 G491R was sensitive to Lynparza (olaparib) in culture, demonstrating decreased colony formation (PMID: 39387837). | 39387837 |
| BARD1 G491R | breast cancer | sensitive | Cisplatin + Olaparib | Preclinical - Cell culture | Actionable | In a preclinical study, a breast cancer cell line expressing BARD1 G491R was sensitive to treatment with the combination of Platinol (cisplatin) and Lynparza (olaparib) in culture, demonstrating decreased colony formation (PMID: 39387837). | 39387837 |
| BARD1 G491R | ovarian cancer | sensitive | Cisplatin | Preclinical - Cell culture | Actionable | In a preclinical study, an ovarian cancer cell line expressing BARD1 G491R was sensitive to Platinol (cisplatin) in culture, demonstrating decreased colony formation (PMID: 39387837). | 39387837 |
| BARD1 G491R | ovarian cancer | sensitive | Olaparib | Preclinical - Cell culture | Actionable | In a preclinical study, an ovarian cancer cell line expressing BARD1 G491R was sensitive to Lynparza (olaparib) in culture, demonstrating decreased colony formation (PMID: 39387837). | 39387837 |
| BARD1 G491R | ovarian cancer | sensitive | Cisplatin + Olaparib | Preclinical - Cell culture | Actionable | In a preclinical study, an ovarian cancer cell line expressing BARD1 G491R was sensitive to treatment with the combination of Platinol (cisplatin) and Lynparza (olaparib) in culture, demonstrating decreased colony formation (PMID: 39387837). | 39387837 |