Variant rs769053886 details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely pathogenic. Variant got 8 ACMG points: 8P and 0B. PVS1

The NM_058216.3(RAD51C):c.3G>A(p.Met1?) variant causes a start lost change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000496 in 1,614,030 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000041 ( 0 hom. )

Consequence

RAD51C
NM_058216.3 start_lost

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:5

Conservation

PhyloP100: -0.131

Variant links:

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 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_pathogenic. Variant got 8 ACMG points.

PVS1

Start lost variant, no new inframe start found.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
RAD51C	NM_058216.3 linkuse as main transcript	c.3G>A	p.Met1?	start_lost	1/9	ENST00000337432.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
RAD51C	ENST00000337432.9 linkuse as main transcript	c.3G>A	p.Met1?	start_lost	1/9	1	NM_058216.3	P2	O43502-1

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152240

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000482

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000410

AC:

AN:

1461790

Hom.:

Cov.:

AF XY:

0.00000688

AC XY:

AN XY:

727192

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000360

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152240

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74368

show subpopulations

Gnomad4 AFR

AF:

0.0000482

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000378

TwinsUK

AF:

0.000539

AC:

ALSPAC

AF:

0.00

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:5

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Hereditary cancer-predisposing syndrome

Uncertain:2

Uncertain significance, criteria provided, single submitter	clinical testing	Ambry Genetics	Apr 11, 2023	The p.M1? variant (also known as c.3G>A), located in coding exon 1 of the RAD51C gene, results from a G to A substitution at nucleotide position 3. This alters the methionine residue at the initiation codon. This variant was reported in 2/60,466 breast cancer cases and in 0/53,461 controls (Dorling et al. N Engl J Med 2021 02;384:428-439). Variations that modify the initiation codon (ATG) are expected to result in either loss of translation initiation, N-terminal truncation, or cause a shift in the mRNA reading frame; however, there is an in-frame methionine 9 amino acids from the initiation site, which may result in N-terminal truncation of unknown functional significance. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -
Uncertain significance, criteria provided, single submitter	clinical testing	Color Diagnostics, LLC DBA Color Health	Feb 21, 2023	This variant affects the translation start codon of the RAD51C gene and may result in an absent or non-functional protein product. However, an in-frame methionine 9 codons downstream may function as an alternative start codon and is located before the first known functional domain (RAD51B/RAD51D/XRCC3 interacting domain at amino acids 79-136) of the RAD51C protein. A functional study has shown that the RAD51C protein produced from this downstream methionine can function similarly to the wild type protein (PMID: 12966089). This variant has been reported in an individual affected with breast cancer (PMID: 31173646). This variant has been identified in 1/31396 chromosomes in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance. -

Fanconi anemia complementation group O

Uncertain:2

Uncertain significance, criteria provided, single submitter	clinical testing	Invitae	Oct 31, 2022	This sequence change affects the initiator methionine of the RAD51C mRNA. The next in-frame methionine is located at codon 10. This variant is present in population databases (rs769053886, gnomAD 0.01%). This variant has not been reported in the literature in individuals affected with RAD51C-related conditions. ClinVar contains an entry for this variant (Variation ID: 230796). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -
Uncertain significance, criteria provided, single submitter	clinical testing	Mendelics	May 28, 2019	- -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

Oct 11, 2019

Initiation codon variant in a gene for which a downstreamin-frame ATG could serve as an alternate initiator codon (French 2003); Not observed at a significant frequency in large population cohorts (Lek et al., 2016); Observed in individuals with breast cancer (Cybulski 2019); This variant is associated with the following publications: (PMID: 12966089, 31173646) -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Pathogenic

0.63

BayesDel_noAF

Benign

-0.63

CADD

Benign

1.1

DANN

Benign

0.75

DEOGEN2

Benign

0.0051

T;T;.

Eigen

Benign

-1.1

Eigen_PC

Benign

-1.1

FATHMM_MKL

Benign

0.093

LIST_S2

Uncertain

0.90

D;D;D

M_CAP

Benign

0.0048

MetaRNN

Uncertain

0.68

D;D;D

MetaSVM

Benign

-1.1

MutationTaster

Benign

1.0

N;N;N

PROVEAN

Benign

-0.11

.;N;N

REVEL

Benign

0.16

Sift

Benign

0.62

.;T;T

Sift4G

Benign

0.14

T;T;T

Polyphen

0.0

.;B;.

Vest4

0.26

MutPred

0.97

Gain of catalytic residue at M1 (P = 0.0101);Gain of catalytic residue at M1 (P = 0.0101);Gain of catalytic residue at M1 (P = 0.0101);

MVP

0.61

ClinPred

0.035

GERP RS

-1.1

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.0

Varity_R

0.035

gMVP

0.25

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

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

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