Genetic Variant FAM136A:p.Glu14Lys (chr2-70301972-C-T) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_001329752.2(FAM136A):c.40G>A(p.Glu14Lys) variant causes a missense change. The variant allele was found at a frequency of 0.0000292 in 1,607,942 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000092 ( 0 hom., cov: 34)

Exomes 𝑓: 0.000023 ( 0 hom. )

Consequence

FAM136A
NM_001329752.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.04

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 -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.0395343).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FAM136A	NM_001329752.2 link	c.40G>A	p.Glu14Lys	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.40G>A	p.Glu14Lys	missense_variant	Exon 1 of 3	3	NM_001329752.2	ENSP00000397269.1		E7EQY1

Frequencies

GnomAD3 genomes

AF:

0.0000920

AC:

AN:

152214

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000724

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:

0.000478

GnomAD3 exomes

AF:

0.0000762

AC:

AN:

236136

Hom.:

AF XY:

0.0000467

AC XY:

AN XY:

128530

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000445

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:

0.00000959

Gnomad OTH exome

AF:

0.000347

GnomAD4 exome

AF:

0.0000227

AC:

AN:

1455612

Hom.:

Cov.:

AF XY:

0.0000235

AC XY:

AN XY:

723826

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000384

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:

0.00000540

Gnomad4 OTH exome

AF:

0.000167

GnomAD4 genome

AF:

0.0000919

AC:

AN:

152330

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74484

show subpopulations

Gnomad4 AFR

AF:

0.0000722

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:

0.000473

Alfa

AF:

0.0000901

Hom.:

Bravo

AF:

0.000144

ExAC

AF:

0.0000578

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jul 09, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.40G>A (p.E14K) alteration is located in exon 1 (coding exon 1) of the FAM136A gene. This alteration results from a G to A substitution at nucleotide position 40, causing the glutamic acid (E) at amino acid position 14 to be replaced by a lysine (K). 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

Pathogenic

0.83

BayesDel_addAF

Benign

-0.29

BayesDel_noAF

Benign

-0.32

CADD

Uncertain

DANN

Uncertain

0.99

DEOGEN2

Benign

0.0098

T;.

Eigen

Benign

-0.22

Eigen_PC

Benign

-0.12

FATHMM_MKL

Benign

0.54

LIST_S2

Benign

0.59

T;T

M_CAP

Benign

0.014

MetaRNN

Benign

0.040

T;T

MetaSVM

Benign

-0.99

MutationAssessor

Benign

1.3

L;.

PrimateAI

Uncertain

0.64

PROVEAN

Benign

-0.97

N;N

REVEL

Benign

0.11

Sift

Benign

0.66

T;D

Sift4G

Benign

0.44

T;D

Polyphen

0.049

B;.

Vest4

0.30

MutPred

0.52

Gain of MoRF binding (P = 0.0017);Gain of MoRF binding (P = 0.0017);

MVP

0.030

MPC

0.077

ClinPred

0.090

GERP RS

3.8

RBP_binding_hub_radar

0.92

RBP_regulation_power_radar

3.7

Varity_R

0.52

gMVP

0.18

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

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