15-57961164-G-C

Position:

• chr15-57961164-G-C

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM2 PM5 PP3_Moderate

The NM_003888.4(ALDH1A2):​c.1382C>G​(p.Ser461Cys) variant causes a missense change involving the alteration of a 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 (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. S461Y) has been classified as Likely pathogenic.

• Frequency: Genomes: not found (cov: 32)
• Consequence: ALDH1A2 NM_003888.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 8.15

Genes affected

ALDH1A2 (HGNC:15472): (aldehyde dehydrogenase 1 family member A2) This protein belongs to the aldehyde dehydrogenase family of proteins. The product of this gene is an enzyme that catalyzes the synthesis of retinoic acid (RA) from retinaldehyde. Retinoic acid, the active derivative of vitamin A (retinol), is a hormonal signaling molecule that functions in developing and adult tissues. The studies of a similar mouse gene suggest that this enzyme and the cytochrome CYP26A1, concurrently establish local embryonic retinoic acid levels which facilitate posterior organ development and prevent spina bifida. Four transcript variants encoding distinct isoforms have been identified for this gene. [provided by RefSeq, May 2011]

ALDH1A2 (HGNC:):

ACMG classification

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chrnull-null-null-null is described in UniProt as null.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.886

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
ALDH1A2	NM_003888.4	c.1382C>G	p.Ser461Cys	missense_variant	11/13	ENST00000249750.9	NP_003879.2
ALDH1A2	NM_001206897.2	c.1319C>G	p.Ser440Cys	missense_variant	12/14		NP_001193826.1
ALDH1A2	NM_170696.3	c.1268C>G	p.Ser423Cys	missense_variant	10/12		NP_733797.1
ALDH1A2	NM_170697.3	c.1094C>G	p.Ser365Cys	missense_variant	9/11		NP_733798.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ALDH1A2	ENST00000249750.9	c.1382C>G	p.Ser461Cys	missense_variant	11/13	1	NM_003888.4	ENSP00000249750.4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Apr 28, 2023

The c.1382C>G (p.S461C) alteration is located in exon 11 (coding exon 11) of the ALDH1A2 gene. This alteration results from a C to G substitution at nucleotide position 1382, causing the serine (S) at amino acid position 461 to be replaced by a cysteine (C). 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	0.17
BayesDel_addAF	Pathogenic	0.24	D
BayesDel_noAF	Uncertain	0.11
CADD	Pathogenic	31
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.72	.;D;.;T;.
Eigen	Pathogenic	0.90
Eigen_PC	Pathogenic	0.85
FATHMM_MKL	Pathogenic	1.0	D
LIST_S2	Uncertain	0.95	D;D;D;D;D
M_CAP	Uncertain	0.094	D
MetaRNN	Pathogenic	0.89	D;D;D;D;D
MetaSVM	Uncertain	0.42	D
MutationAssessor	Pathogenic	3.0	.;M;.;.;.
MutationTaster	Benign	1.0	D;D;D;D;D
PrimateAI	Uncertain	0.73	T
PROVEAN	Uncertain	-3.0	D;D;D;D;D
REVEL	Pathogenic	0.74
Sift	Uncertain	0.0050	D;D;D;D;D
Sift4G	Pathogenic	0.0010	D;D;D;D;D
Polyphen		1.0, 1.0	.;D;D;.;.
Vest4		0.70
MutPred		0.77		.;Gain of ubiquitination at K456 (P = 0.0599);.;.;.;
MVP		0.71
MPC		1.1
ClinPred		0.98	D
GERP RS		5.1
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		2.8
Varity_R		0.81
gMVP		0.94

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: chr15-58253362;