rs587781309

Variant names:

• chr17-58692723-T-C
• rs587781309
• NM_058216.3:c.80T>C

Variant summary

Our verdict is Pathogenic. The variant received 11 ACMG points: 11P and 0B. PS3 PM2 PP3_Strong PP5

The NM_058216.3(RAD51C):​c.80T>C​(p.Leu27Pro) variant causes a missense change. The variant allele was found at a frequency of 0.00000137 in 1,461,890 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). ClinVar reports functional evidence for this variant: "SCV000172944: "In multiple assays testing RAD51C function, this alteration showed an abnormal read-out" (Prakash R et al. Proc Natl Acad Sci U S A, 2022 Sep" and additional evidence is available in ClinVar. Synonymous variant affecting the same amino acid position (i.e. L27L) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: RAD51C NM_058216.3 missense
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:5 U:4
• Conservation: PhyloP100: 6.13
• Publications: 6 publications found

Genes affected

RAD51C (HGNC:9820): (RAD51 paralog C) This gene is a member of the RAD51 family. RAD51 family members are highly similar to bacterial RecA and Saccharomyces cerevisiae Rad51 and are known to be involved in the homologous recombination and repair of DNA. This protein can interact with other RAD51 paralogs and is reported to be important for Holliday junction resolution. Mutations in this gene are associated with Fanconi anemia-like syndrome. This gene is one of four localized to a region of chromosome 17q23 where amplification occurs frequently in breast tumors. Overexpression of the four genes during amplification has been observed and suggests a possible role in tumor progression. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2013]

RAD51C Gene-Disease associations (from GenCC):

• RAD51C-related cancer predisposition

  Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
• breast-ovarian cancer, familial, susceptibility to, 3

  Inheritance: AD Classification: STRONG, LIMITED Submitted by: Genomics England PanelApp, Ambry Genetics, Labcorp Genetics (formerly Invitae)
• Fanconi anemia complementation group O

  Inheritance: AR Classification: STRONG, MODERATE, LIMITED Submitted by: Ambry Genetics, ClinGen, Labcorp Genetics (formerly Invitae), G2P
• hereditary breast ovarian cancer syndrome

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• Fanconi anemia

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Pathogenic. The variant received 11 ACMG points.

• PS3: PS3 evidence extracted from ClinVar submissions: SCV000172944: "In multiple assays testing RAD51C function, this alteration showed an abnormal read-out" (Prakash R et al. Proc Natl Acad Sci U S A, 2022 Sep;119:e2202727119; Hu C et al. Cancer Res, 2023 Aug;83:2557-2571; Olvera-León R et al Cell 2024 Oct;187(20):5719-5734.e19).; SCV000686391: Functional studies have shown that this variant significantly reduced homologous recombination activity (PMID: 36099300, 37253112), sensitivity to cisplatin and olaparib (PMID: 37253112), and impacts function (PMID: 39299233).; SCV005896142: Functional studies indicate this variant impacts protein function [PMID: 39299233, 37253112, 36099300].; SCV006324410: Functional studies have shown that this variant significantly reduced homologous recombination activity (PMID: 36099300, 37253112), sensitivity to cisplatin and olaparib (PMID: 37253112), and impacts function (PMID: 39299233)
• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.978
• PP5: Variant 17-58692723-T-C is Pathogenic according to our data. Variant chr17-58692723-T-C is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 140837.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_058216.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	RAD51C	NM_058216.3	MANE Select	c.80T>C	p.Leu27Pro	missense	Exon 1 of 9	NP_478123.1	O43502-1
	RAD51C	NM_002876.4		c.80T>C	p.Leu27Pro	missense	Exon 1 of 2	NP_002867.1	O43502-2
	RAD51C	NR_103872.2		n.122T>C		non_coding_transcript_exon	Exon 1 of 8

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	RAD51C	ENST00000337432.9	TSL:1 MANE Select	c.80T>C	p.Leu27Pro	missense	Exon 1 of 9	ENSP00000336701.4	O43502-1
	RAD51C	ENST00000421782.3	TSL:1	c.80T>C	p.Leu27Pro	missense	Exon 1 of 2	ENSP00000391450.2	O43502-2
	RAD51C	ENST00000482007.5	TSL:1	n.80T>C		non_coding_transcript_exon	Exon 1 of 8	ENSP00000433332.1	Q7KZJ0

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461890 Hom.: 0 Cov.: 32 AF XY: 0.00000275 AC XY: 2 AN XY: 727246

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53416

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00000180 AC: 2 AN: 1112012

Other (OTH) AF: 0.00 AC: 0 AN: 60396

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions

Significance: Conflicting classifications of pathogenicity

Revision: criteria provided, conflicting classifications

Pathogenic	VUS	Benign	Condition
1	2	-	Breast-ovarian cancer, familial, susceptibility to, 3 (3)
2	-	-	Hereditary cancer-predisposing syndrome (2)
1	-	-	Breast-ovarian cancer, familial, susceptibility to, 2 (1)
-	1	-	Fanconi anemia complementation group O (1)
1	-	-	Hereditary breast ovarian cancer syndrome (1)
-	1	-	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.97
BayesDel_addAF	Pathogenic	0.38	D
BayesDel_noAF	Pathogenic	0.30
CADD	Pathogenic	31
DANN	Benign	0.96
DEOGEN2	Benign	0.41	T
Eigen	Uncertain	0.67
Eigen_PC	Uncertain	0.62
FATHMM_MKL	Uncertain	0.90	D
LIST_S2	Benign	0.85	D
M_CAP	Uncertain	0.26	D
MetaRNN	Pathogenic	0.98	D
MetaSVM	Uncertain	0.14	D
MutationAssessor	Uncertain	2.8	M
PhyloP100		6.1
PrimateAI	Uncertain	0.75	T
PROVEAN	Pathogenic	-5.1	D
REVEL	Pathogenic	0.71
Sift	Uncertain	0.0010	D
Sift4G	Pathogenic	0.0	D
Polyphen		1.0	D
Vest4		0.86
MutPred		0.88		Gain of disorder (P = 0.0084)
MVP		0.98
MPC		1.1
ClinPred		1.0	D
GERP RS		4.7
PromoterAI		0.019	Neutral
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.78
gMVP		0.87
Mutation Taster		=31/69	disease causing

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs587781309; hg19: chr17-56770084;