rs41281202
Variant summary
Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2BP4_StrongBP6
The NM_000136.3(FANCC):c.1156T>C(p.Ser386Pro) variant causes a missense, splice region change. The variant allele was found at a frequency of 0.000393 in 1,614,122 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).
Frequency
Consequence
NM_000136.3 missense, splice_region
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Likely_benign. Variant got -3 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
FANCC | NM_000136.3 | c.1156T>C | p.Ser386Pro | missense_variant, splice_region_variant | Exon 13 of 15 | ENST00000289081.8 | NP_000127.2 |
Ensembl
Frequencies
GnomAD3 genomes AF: 0.00214 AC: 326AN: 152208Hom.: 1 Cov.: 33
GnomAD3 exomes AF: 0.000553 AC: 139AN: 251354Hom.: 1 AF XY: 0.000405 AC XY: 55AN XY: 135876
GnomAD4 exome AF: 0.000210 AC: 307AN: 1461796Hom.: 0 Cov.: 37 AF XY: 0.000190 AC XY: 138AN XY: 727190
GnomAD4 genome AF: 0.00215 AC: 328AN: 152326Hom.: 1 Cov.: 33 AF XY: 0.00193 AC XY: 144AN XY: 74478
ClinVar
Submissions by phenotype
not specified Benign:3Other:1
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This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -
Variant summary: FANCC c.1156T>C (p.Ser386Pro) results in a non-conservative amino acid change in the encoded protein sequence. Four of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 0.00074 in 277128 control chromosomes, predominantly at a frequency of 0.0079 within the African subpopulation in the gnomAD database, including 1 homozygotes. The observed variant frequency within African control individuals in the gnomAD database is approximately 4.5 fold of the estimated maximal expected allele frequency for a pathogenic variant in FANCC causing Fanconi Anemia Group C phenotype (0.0018), strongly suggesting that the variant is a benign polymorphism found primarily in populations of African origin. To our knowledge, no occurrence of c.1156T>C in individuals affected with Fanconi Anemia Group C and no experimental evidence demonstrating its impact on protein function have been reported. Four ClinVar submissions from clinical diagnostic laboratories (evaluation after 2014) cite the variant as likely benign (3x) and once as uncertain significance. Based on the evidence outlined above, the variant was classified as likely benign. -
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not provided Uncertain:1Benign:1
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Fanconi anemia Benign:2
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Fanconi anemia complementation group C Uncertain:1
This variant was determined to be of uncertain significance according to ACMG Guidelines, 2015 [PMID:25741868]. -
Fanconi anemia complementation group A Benign:1
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Hereditary cancer-predisposing syndrome Benign:1
This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at