19-17300911-C-T

Variant names:

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_024527.5(ABHD8):c.706G>A(p.Ala236Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000687 in 1,456,018 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 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)

Exomes 𝑓: 0.0000069 ( 0 hom. )

Consequence

ABHD8
NM_024527.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.05

Variant links:

Genes affected

ABHD8 (HGNC:23759): (abhydrolase domain containing 8) This gene is upstream of, and in a head-to-head orientation with the gene for the mitochondrial ribosomal protein L34. The predicted protein contains alpha/beta hydrolase fold and secretory lipase domains. [provided by RefSeq, Jul 2008]

ABHD8 links:

MRPL34 (HGNC:14488): (mitochondrial ribosomal protein L34) Mammalian mitochondrial ribosomal proteins are encoded by nuclear genes and help in protein synthesis within the mitochondrion. Mitochondrial ribosomes (mitoribosomes) consist of a small 28S subunit and a large 39S subunit. They have an estimated 75% protein to rRNA composition compared to prokaryotic ribosomes, where this ratio is reversed. Another difference between mammalian mitoribosomes and prokaryotic ribosomes is that the latter contain a 5S rRNA. Among different species, the proteins comprising the mitoribosome differ greatly in sequence, and sometimes in biochemical properties, which prevents easy recognition by sequence homology. This gene encodes a 39S subunit protein. [provided by RefSeq, Jul 2008]

MRPL34 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.14109853).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ABHD8	NM_024527.5 link	c.706G>A	p.Ala236Thr	missense_variant	Exon 2 of 5	ENST00000247706.4	NP_078803.4	Q96I13B2C6G3
MRPL34	NM_001400072.1 link	c.-62-4920C>T		intron_variant	Intron 1 of 2		NP_001387001.1
MRPL34	NM_001400073.1 link	c.-63+2534C>T		intron_variant	Intron 2 of 3		NP_001387002.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
ABHD8	ENST00000247706.4 link	c.706G>A	p.Ala236Thr	missense_variant	Exon 2 of 5	1	NM_024527.5	ENSP00000247706.2	Q96I13
MRPL34	ENST00000595444.1 link	c.215-4920C>T		intron_variant	Intron 1 of 2	3		ENSP00000472266.1	M0R226
MRPL34	ENST00000600434.5 link	c.-63+2534C>T		intron_variant	Intron 2 of 3	3		ENSP00000469581.1	Q9BQ48
ABHD8	ENST00000593489.1 link	c.*229G>A		downstream_gene_variant		4		ENSP00000468883.1	M0QX40

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000811

AC:

AN:

246758

Hom.:

AF XY:

0.0000149

AC XY:

AN XY:

133918

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000295

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:

0.00000901

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000687

AC:

AN:

1456018

Hom.:

Cov.:

AF XY:

0.00000829

AC XY:

AN XY:

723420

show subpopulations

Gnomad4 AFR exome

AF:

0.0000300

Gnomad4 AMR exome

AF:

0.0000227

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:

0.00000722

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Alfa

AF:

0.0000508

Hom.:

Bravo

AF:

0.00000756

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Apr 07, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.706G>A (p.A236T) alteration is located in exon 2 (coding exon 1) of the ABHD8 gene. This alteration results from a G to A substitution at nucleotide position 706, causing the alanine (A) at amino acid position 236 to be replaced by a threonine (T). 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

0.083

BayesDel_addAF

Benign

-0.088

BayesDel_noAF

Benign

-0.28

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.022

Eigen

Benign

-0.14

Eigen_PC

Benign

0.019

FATHMM_MKL

Benign

0.46

LIST_S2

Uncertain

0.91

M_CAP

Benign

0.056

MetaRNN

Benign

0.14

MetaSVM

Benign

-0.61

MutationAssessor

Benign

0.99

PrimateAI

Uncertain

0.57

PROVEAN

Benign

-0.97

REVEL

Benign

0.14

Sift

Benign

0.32

Sift4G

Benign

0.40

Polyphen

0.10

Vest4

0.16

MutPred

0.56

Gain of MoRF binding (P = 0.1233);

MVP

0.59

MPC

1.1

ClinPred

0.13

GERP RS

5.6

Varity_R

0.068

gMVP

0.58

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