4-186156145-C-T

Position:

• chr4-186156145-C-T

Variant summary

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

The NM_001395294.1(FAM149A):​c.1402C>T​(p.Leu468Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: FAM149A NM_001395294.1 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.103

Genes affected

FAM149A (HGNC:24527): (family with sequence similarity 149 member A)

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=0.051552236).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
FAM149A	NM_001395294.1	c.1402C>T	p.Leu468Phe	missense_variant	7/14	ENST00000706927.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
FAM149A	ENST00000706927.1	c.1402C>T	p.Leu468Phe	missense_variant	7/14		NM_001395294.1	A2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 34

GnomAD4 genome Cov.: 33

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

Jun 13, 2024

The c.529C>T (p.L177F) alteration is located in exon 7 (coding exon 4) of the FAM149A gene. This alteration results from a C to T substitution at nucleotide position 529, causing the leucine (L) at amino acid position 177 to be replaced by a phenylalanine (F). 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	0.12
BayesDel_addAF	Benign	-0.28	T
BayesDel_noAF	Benign	-0.64
CADD	Benign	0.42
DANN	Benign	0.79
DEOGEN2	Benign	0.0059	.;T;.;.;.;.
Eigen	Benign	-1.7
Eigen_PC	Benign	-1.8
FATHMM_MKL	Benign	0.018	N
LIST_S2	Benign	0.63	.;T;.;.;T;T
M_CAP	Benign	0.0034	T
MetaRNN	Benign	0.052	T;T;T;T;T;T
MetaSVM	Benign	-0.98	T
MutationAssessor	Benign	0.81	.;L;.;.;.;.
MutationTaster	Benign	1.0	N;N;N;N;N;N
PrimateAI	Benign	0.35	T
PROVEAN	Benign	-1.1	N;N;N;N;N;N
REVEL	Benign	0.016
Sift	Benign	0.17	T;T;T;T;T;T
Sift4G	Benign	0.10	T;T;T;T;T;T
Polyphen		0.0090	.;B;.;.;.;.
Vest4		0.14
MutPred		0.47		.;Loss of stability (P = 0.2885);.;.;.;.;
MVP		0.040
MPC		0.10
ClinPred		0.047	T
GERP RS		-5.7
Varity_R		0.034
gMVP		0.14

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr4-187077299;