chr4-145729197-G-A

Position:

• chr4-145729197-G-A

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_001080531.3(C4orf51):​c.395G>A​(p.Cys132Tyr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000138 in 1,452,622 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/19 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: C4orf51 NM_001080531.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.0830

Genes affected

C4orf51 (HGNC:37264): (chromosome 4 open reading frame 51)

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.048329353).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
C4orf51	NM_001080531.3	c.395G>A	p.Cys132Tyr	missense_variant	4/6	ENST00000438731.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
C4orf51	ENST00000438731.7	c.395G>A	p.Cys132Tyr	missense_variant	4/6	2	NM_001080531.3	P1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD3 exomes AF: 0.00000818 AC: 2 AN: 244634 Hom.: 0 AF XY: 0.00000753 AC XY: 1 AN XY: 132728

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000588

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000138 AC: 2 AN: 1452622 Hom.: 0 Cov.: 29 AF XY: 0.00000138 AC XY: 1 AN XY: 722480

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.0000452

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: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 31

Bravo AF: 0.00000378

ExAC AF: 0.0000166 AC: 2

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jul 06, 2021

The c.395G>A (p.C132Y) alteration is located in exon 4 (coding exon 4) of the C4orf51 gene. This alteration results from a G to A substitution at nucleotide position 395, causing the cysteine (C) at amino acid position 132 to be replaced by a tyrosine (Y). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.092
BayesDel_addAF	Benign	-0.17	T
BayesDel_noAF	Benign	-0.48
CADD	Benign	0.084
DANN	Benign	0.28
DEOGEN2	Benign	0.064	T
Eigen	Benign	-1.0
Eigen_PC	Benign	-1.2
FATHMM_MKL	Benign	0.0093	N
LIST_S2	Benign	0.30	T
M_CAP	Benign	0.0017	T
MetaRNN	Benign	0.048	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.0	N
MutationTaster	Benign	1.0	N
PROVEAN	Uncertain	-2.5	D
REVEL	Benign	0.014
Sift	Benign	0.059	T
Sift4G	Benign	1.0	T
Polyphen		0.0040	B
Vest4		0.16
MutPred		0.27		Gain of phosphorylation at C132 (P = 0.0382);
MVP		0.099
MPC		0.13
ClinPred		0.029	T
GERP RS		-1.3
Varity_R		0.087
gMVP		0.0072

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		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

Other links and lift over

dbSNP: rs755307241; hg19: chr4-146650349;