5-126595143-G-A

Position:

chr5-126595143-G-A

Variant summary

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

The NM_001182.5(ALDH7A1):c.56C>T(p.Ser19Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000639 in 1,564,268 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 31)

Exomes 𝑓: 0.0000042 ( 0 hom. )

Consequence

ALDH7A1
NM_001182.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:5

Conservation

PhyloP100: 0.450

Variant links:

Genes affected

ALDH7A1 (HGNC:877): (aldehyde dehydrogenase 7 family member A1) The protein encoded by this gene is a member of subfamily 7 in the aldehyde dehydrogenase gene family. These enzymes are thought to play a major role in the detoxification of aldehydes generated by alcohol metabolism and lipid peroxidation. This particular member has homology to a previously described protein from the green garden pea, the 26g pea turgor protein. It is also involved in lysine catabolism that is known to occur in the mitochondrial matrix. Recent reports show that this protein is found both in the cytosol and the mitochondria, and the two forms likely arise from the use of alternative translation initiation sites. An additional variant encoding a different isoform has also been found for this gene. Mutations in this gene are associated with pyridoxine-dependent epilepsy. Several related pseudogenes have also been identified. [provided by RefSeq, Jan 2011]

ALDH7A1 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=0.07026228).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
ALDH7A1	NM_001182.5 linkuse as main transcript	c.56C>T	p.Ser19Phe	missense_variant	1/18	ENST00000409134.8	NP_001173.2
ALDH7A1	NM_001202404.2 linkuse as main transcript	c.56C>T	p.Ser19Phe	missense_variant	1/16		NP_001189333.2
ALDH7A1	NM_001201377.2 linkuse as main transcript	c.-29C>T		5_prime_UTR_variant	1/18		NP_001188306.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ALDH7A1	ENST00000409134.8 linkuse as main transcript	c.56C>T	p.Ser19Phe	missense_variant	1/18	1	NM_001182.5	ENSP00000387123	P4	P49419-1

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

152246

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

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:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000175

AC:

AN:

171570

Hom.:

AF XY:

0.0000110

AC XY:

AN XY:

91114

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000114

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:

0.00

GnomAD4 exome

AF:

0.00000425

AC:

AN:

1412022

Hom.:

Cov.:

AF XY:

0.00000573

AC XY:

AN XY:

697842

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000106

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:

0.00000184

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000263

AC:

AN:

152246

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74382

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000131

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000340

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:5

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Pyridoxine-dependent epilepsy

Uncertain:3

Uncertain significance, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Jan 12, 2018	This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -
Uncertain significance, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jul 05, 2022	This sequence change replaces serine, which is neutral and polar, with phenylalanine, which is neutral and non-polar, at codon 19 of the ALDH7A1 protein (p.Ser19Phe). This variant is present in population databases (no rsID available, gnomAD 0.02%). This variant has not been reported in the literature in individuals affected with ALDH7A1-related conditions. ClinVar contains an entry for this variant (Variation ID: 204855). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt ALDH7A1 protein function. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -
Uncertain significance, criteria provided, single submitter	clinical testing	Genome-Nilou Lab	Apr 11, 2023	- -

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 07, 2017

The p.S19F variant (also known as c.56C>T), located in coding exon 1 of the ALDH7A1 gene, results from a C to T substitution at nucleotide position 56. The serine at codon 19 is replaced by phenylalanine, an amino acid with highly dissimilar properties. This amino acid position is poorly conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

Jan 10, 2023

In silico analysis supports that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.093

BayesDel_addAF

Benign

-0.23

BayesDel_noAF

Benign

-0.35

CADD

Benign

7.9

DANN

Benign

0.86

DEOGEN2

Benign

0.0089

T;T;T;.;T;.;.;.;T;T;T;T

Eigen

Benign

-0.94

Eigen_PC

Benign

-0.92

FATHMM_MKL

Benign

0.074

LIST_S2

Uncertain

0.90

D;D;D;D;D;D;D;D;D;D;D;D

M_CAP

Benign

0.039

MetaRNN

Benign

0.070

T;T;T;T;T;T;T;T;T;T;T;T

MetaSVM

Benign

-0.71

MutationAssessor

Benign

1.3

.;L;.;.;.;.;.;L;.;.;.;.

MutationTaster

Benign

1.0

N;N;N

PrimateAI

Benign

0.35

PROVEAN

Benign

0.34

.;N;.;.;.;.;.;N;.;.;N;N

REVEL

Benign

0.16

Sift

Benign

0.15

.;T;.;.;.;.;.;T;.;.;T;T

Sift4G

Benign

0.72

.;T;.;.;.;.;.;T;.;T;.;.

Polyphen

0.0

.;B;.;.;.;.;.;.;.;.;.;.

Vest4

0.14, 0.19, 0.18

MutPred

0.28

Loss of disorder (P = 0.0017);Loss of disorder (P = 0.0017);Loss of disorder (P = 0.0017);Loss of disorder (P = 0.0017);Loss of disorder (P = 0.0017);Loss of disorder (P = 0.0017);Loss of disorder (P = 0.0017);Loss of disorder (P = 0.0017);Loss of disorder (P = 0.0017);Loss of disorder (P = 0.0017);.;Loss of disorder (P = 0.0017);

MVP

0.82

MPC

0.17

ClinPred

0.030

GERP RS

1.0

Varity_R

0.037

gMVP

0.45

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