19-35536860-C-G

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_014364.5(GAPDHS):c.115C>G(p.Gln39Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000342 in 1,461,768 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 0.0000034 (0 hom.)
• Consequence: GAPDHS NM_014364.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.00100

Genes affected

GAPDHS (HGNC:24864): (glyceraldehyde-3-phosphate dehydrogenase, spermatogenic) This gene encodes a protein belonging to the glyceraldehyde-3-phosphate dehydrogenase family of enzymes that play an important role in carbohydrate metabolism. Like its somatic cell counterpart, this sperm-specific enzyme functions in a nicotinamide adenine dinucleotide-dependent manner to remove hydrogen and add phosphate to glyceraldehyde 3-phosphate to form 1,3-diphosphoglycerate. During spermiogenesis, this enzyme may play an important role in regulating the switch between different energy-producing pathways, and it is required for sperm motility and male fertility. [provided by RefSeq, Jul 2008]

ACMG classification

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=0.026260883).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
GAPDHS	NM_014364.5	c.115C>G	p.Gln39Glu	missense_variant	2/11	ENST00000222286.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
GAPDHS	ENST00000222286.9	c.115C>G	p.Gln39Glu	missense_variant	2/11	1	NM_014364.5	P1
GAPDHS	ENST00000585510.1	c.-90C>G		5_prime_UTR_variant	1/6	3
GAPDHS	ENST00000586334.1	c.68-1447C>G		intron_variant, NMD_transcript_variant		2

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome AF: 0.00000342 AC: 5 AN: 1461768 Hom.: 0 Cov.: 31 AF XY: 0.00000275 AC XY: 2 AN XY: 727184

Gnomad4 AFR exome AF: 0.0000896

Gnomad4 AMR exome AF: 0.00

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: 0.00

Gnomad4 OTH exome AF: 0.0000331

GnomAD4 genome Cov.: 31

Asia WGS AF: 0.000289 AC: 1 AN: 3478

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

Jan 26, 2022

The c.115C>G (p.Q39E) alteration is located in exon 2 (coding exon 2) of the GAPDHS gene. This alteration results from a C to G substitution at nucleotide position 115, causing the glutamine (Q) at amino acid position 39 to be replaced by a glutamic acid (E). 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	0.061
BayesDel_addAF	Benign	-0.35	T
BayesDel_noAF	Benign	-0.73
Cadd	Benign	0.077
Dann	Benign	0.11
DEOGEN2	Benign	0.13	T
Eigen	Benign	-1.6
Eigen_PC	Benign	-1.7
FATHMM_MKL	Benign	0.059	N
LIST_S2	Benign	0.33	T
M_CAP	Benign	0.0025	T
MetaRNN	Benign	0.026	T
MetaSVM	Benign	-0.99	T
MutationAssessor	Benign	-0.26	N
MutationTaster	Benign	1.0	N
PrimateAI	Benign	0.38	T
PROVEAN	Benign	-0.080	N
REVEL	Benign	0.015
Sift	Benign	1.0	T
Sift4G	Benign	0.87	T
Polyphen		0.0	B
Vest4		0.16
MutPred		0.11		Gain of solvent accessibility (P = 0.0109);
MVP		0.11
MPC		0.15
ClinPred		0.083	T
GERP RS		-6.0
Varity_R		0.096
gMVP		0.061

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

Other links and lift over

dbSNP: rs2071469134; hg19: chr19-36027762;