7-150801627-A-G

Variant names:

• chr7-150801627-A-G
• NM_018487.3:c.77A>G

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The NM_018487.3(TMEM176A):​c.77A>G​(p.Glu26Gly) 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 pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: TMEM176A NM_018487.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.39

Genes affected

TMEM176A (HGNC:24930): (transmembrane protein 176A) Predicted to be involved in negative regulation of dendritic cell differentiation. Predicted to be integral component of membrane. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Uncertain_significance. Variant got 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.919

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TMEM176A	NM_018487.3	c.77A>G	p.Glu26Gly	missense_variant	Exon 2 of 7	ENST00000004103.8	NP_060957.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TMEM176A	ENST00000004103.8	c.77A>G	p.Glu26Gly	missense_variant	Exon 2 of 7	1	NM_018487.3	ENSP00000004103.3

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Feb 12, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.77A>G (p.E26G) alteration is located in exon 2 (coding exon 1) of the TMEM176A gene. This alteration results from a A to G substitution at nucleotide position 77, causing the glutamic acid (E) at amino acid position 26 to be replaced by a glycine (G). 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	0.29
BayesDel_addAF	Benign	-0.025	T
BayesDel_noAF	Benign	-0.27
CADD	Uncertain	25
DANN	Pathogenic	1.0
DEOGEN2	Benign	0.27	T;T
Eigen	Uncertain	0.45
Eigen_PC	Uncertain	0.36
FATHMM_MKL	Benign	0.63	D
LIST_S2	Benign	0.71	.;T
M_CAP	Benign	0.014	T
MetaRNN	Pathogenic	0.92	D;D
MetaSVM	Benign	-1.1	T
MutationAssessor	Pathogenic	3.1	M;M
PrimateAI	Benign	0.43	T
PROVEAN	Pathogenic	-6.5	D;D
REVEL	Uncertain	0.29
Sift	Uncertain	0.0020	D;D
Sift4G	Pathogenic	0.0	D;D
Polyphen		1.0	D;D
Vest4		0.43
MutPred		0.87		Loss of ubiquitination at K31 (P = 0.0683);Loss of ubiquitination at K31 (P = 0.0683);
MVP		0.35
MPC		1.2
ClinPred		0.99	D
GERP RS		3.8
Varity_R		0.37
gMVP		0.56

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: chr7-150498715;