NM_032717.5:c.911-25C>A

Variant names:

• chr4-83597405-C-A
• rs3733329
• NM_032717.5:c.911-25C>A

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_032717.5(GPAT3):​c.911-25C>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000885 in 1,130,368 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 8.8e-7 (0 hom.)
• Consequence: GPAT3 NM_032717.5 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.828
• Publications: 0 publications found

Genes affected

GPAT3 (HGNC:28157): (glycerol-3-phosphate acyltransferase 3) This gene encodes a member of the lysophosphatidic acid acyltransferase protein family. The encoded protein is an enzyme which catalyzes the conversion of glycerol-3-phosphate to lysophosphatidic acid in the synthesis of triacylglycerol. Multiple alternatively spliced variants, encoding the same protein, have been identified. [provided by RefSeq, Jan 2012]

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.83).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
GPAT3	NM_032717.5	c.911-25C>A		intron_variant	Intron 8 of 11	ENST00000264409.5	NP_116106.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
GPAT3	ENST00000264409.5	c.911-25C>A		intron_variant	Intron 8 of 11	1	NM_032717.5	ENSP00000264409.4
GPAT3	ENST00000395226.6	c.911-25C>A		intron_variant	Intron 9 of 12	1		ENSP00000378651.2
GPAT3	ENST00000611707.4	c.911-25C>A		intron_variant	Intron 9 of 12	5		ENSP00000482571.1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome AF: 8.85e-7 AC: 1 AN: 1130368 Hom.: 0 Cov.: 16 AF XY: 0.00 AC XY: 0 AN XY: 560376

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.0000420 AC: 1 AN: 23834

American (AMR) AF: 0.00 AC: 0 AN: 22998

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 19314

East Asian (EAS) AF: 0.00 AC: 0 AN: 32830

South Asian (SAS) AF: 0.00 AC: 0 AN: 45984

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 46320

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 3894

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 888730

Other (OTH) AF: 0.00 AC: 0 AN: 46464

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome Cov.: 31

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.83
CADD	Benign	14
DANN	Benign	0.47
PhyloP100		0.83

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.20		Details are displayed if max score is > 0.2
DS_AG_spliceai		0.20		Position offset: 2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs3733329; hg19: chr4-84518558;