Genetic Variant FAM136A:p.Ala54Val (chr2-70301851-G-A) – ACMG Classification: Likely_benign (-5 pts)

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 0P and 5B. BP4_StrongBP6

The NM_001329752.2(FAM136A):c.161C>T(p.Ala54Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000409 in 1,552,748 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. 10/13 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Benign (no stars).

Frequency

Genomes: 𝑓 0.0024 ( 1 hom., cov: 34)

Exomes 𝑓: 0.00020 ( 1 hom. )

Consequence

FAM136A
NM_001329752.2 missense

Scores

Clinical Significance

Benign no assertion criteria provided B:1

Conservation

PhyloP100: 0.640

Variant links:

Genes affected

FAM136A (HGNC:25911): (family with sequence similarity 136 member A) This gene encodes a mitochondrially localized protein that is highly conserved across species. The gene is expressed in a variety of tissues including human lymphoblast cells and rat neurosensorial epithelium of the cristaampullaris. A mutation in this gene has been associated with familial Meniere's disease, a chronic disorder of the inner ear. Several pseudogenes of this gene are found on other chromosomes. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Aug 2016]

FAM136A links:

ENSG00000233849 (HGNC:):

ENSG00000233849 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -5 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.0041364133).

BP6

Variant 2-70301851-G-A is Benign according to our data. Variant chr2-70301851-G-A is described in ClinVar as [Benign]. Clinvar id is 3049056.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FAM136A	NM_001329752.2 link	c.161C>T	p.Ala54Val	missense_variant	Exon 1 of 3	ENST00000430566.6	NP_001316681.1	E7EQY1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FAM136A	ENST00000430566.6 link	c.161C>T	p.Ala54Val	missense_variant	Exon 1 of 3	3	NM_001329752.2	ENSP00000397269.1		E7EQY1

Frequencies

GnomAD3 genomes

AF:

0.00234

AC:

356

AN:

152266

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00825

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000588

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:

0.0000147

Gnomad OTH

AF:

0.00191

GnomAD3 exomes

AF:

0.000487

AC:

AN:

151876

Hom.:

AF XY:

0.000323

AC XY:

AN XY:

80528

show subpopulations

Gnomad AFR exome

AF:

0.00788

Gnomad AMR exome

AF:

0.000202

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:

0.000230

GnomAD4 exome

AF:

0.000196

AC:

275

AN:

1400364

Hom.:

Cov.:

AF XY:

0.000140

AC XY:

AN XY:

690964

show subpopulations

Gnomad4 AFR exome

AF:

0.00751

Gnomad4 AMR exome

AF:

0.000196

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:

0.00000278

Gnomad4 OTH exome

AF:

0.000413

GnomAD4 genome

AF:

0.00236

AC:

360

AN:

152384

Hom.:

Cov.:

AF XY:

0.00211

AC XY:

157

AN XY:

74524

show subpopulations

Gnomad4 AFR

AF:

0.00832

Gnomad4 AMR

AF:

0.000588

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00189

Alfa

AF:

0.00171

Hom.:

Bravo

AF:

0.00246

ExAC

AF:

0.000559

AC:

Asia WGS

AF:

0.00202

AC:

AN:

3478

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: no assertion criteria provided

LINK: link

Submissions by phenotype

FAM136A-related disorder

Benign:1

May 15, 2020

PreventionGenetics, part of Exact Sciences

Significance: Benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

This variant is classified as benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Benign

-0.33

BayesDel_noAF

Benign

-0.24

CADD

Benign

DANN

Uncertain

0.99

Eigen

Benign

-0.60

Eigen_PC

Benign

-0.81

FATHMM_MKL

Benign

0.056

LIST_S2

Benign

0.49

T;T

MetaRNN

Benign

0.0041

T;T

MetaSVM

Benign

-0.97

PROVEAN

Benign

-0.33

N;N

REVEL

Benign

0.016

Sift

Pathogenic

0.0

D;D

Sift4G

Uncertain

0.023

D;.

Vest4

0.23

MVP

0.014

ClinPred

0.081

GERP RS

0.66

gMVP

0.046

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.030

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

Other links and lift over