1-231241390-C-T

Variant names:

• chr1-231241390-C-T
• NM_014236.4:c.12C>T

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 2P and 7B. PM2 BP4_Strong BP6_Moderate BP7

The NM_014236.4(GNPAT):​c.12C>T​(p.Ser4Ser) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,138 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: GNPAT NM_014236.4 synonymous
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 0.0130
• Publications: 0 publications found

Genes affected

GNPAT (HGNC:4416): (glyceronephosphate O-acyltransferase) This gene encodes an enzyme located in the peroxisomal membrane which is essential to the synthesis of ether phospholipids. Mutations in this gene are associated with rhizomelic chondrodysplasia punctata. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Oct 2015]

FSAF1 (HGNC:25332): (chromosome 1 open reading frame 131) Enables RNA binding activity. Located in chromosome. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Our verdict: Likely_benign. The variant received -5 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.72).
• BP6: Variant 1-231241390-C-T is Benign according to our data. Variant chr1-231241390-C-T is described in ClinVar as Likely_benign. ClinVar VariationId is 3658471.Status of the report is criteria_provided_single_submitter, 1 stars.
• BP7: Synonymous conserved (PhyloP=0.013 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_014236.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	GNPAT	NM_014236.4	MANE Select	c.12C>T	p.Ser4Ser	synonymous	Exon 1 of 16	NP_055051.1	O15228-1
	GNPAT	NM_001316350.2		c.12C>T	p.Ser4Ser	synonymous	Exon 1 of 15	NP_001303279.1	O15228-2
	FSAF1	NM_152379.4	MANE Select	c.-249G>A		upstream_gene	N/A	NP_689592.2	Q8NDD1-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	GNPAT	ENST00000366647.9	TSL:1 MANE Select	c.12C>T	p.Ser4Ser	synonymous	Exon 1 of 16	ENSP00000355607.4	O15228-1
	GNPAT	ENST00000851685.1		c.12C>T	p.Ser4Ser	synonymous	Exon 1 of 16	ENSP00000521744.1
	GNPAT	ENST00000926541.1		c.12C>T	p.Ser4Ser	synonymous	Exon 1 of 16	ENSP00000596600.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461138 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 726954

African (AFR) AF: 0.00 AC: 0 AN: 33466

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26134

East Asian (EAS) AF: 0.00 AC: 0 AN: 39698

South Asian (SAS) AF: 0.00 AC: 0 AN: 86240

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53416

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5766

European-Non Finnish (NFE) AF: 0.00000180 AC: 2 AN: 1111336

Other (OTH) AF: 0.00 AC: 0 AN: 60358

GnomAD4 genome Cov.: 33

ClinVar

ClinVar submissions

Significance: Likely benign

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	-	1	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.72
CADD	Benign	6.0
DANN	Benign	0.73
PhyloP100		0.013
PromoterAI		-0.086	Neutral
Mutation Taster		=100/0	polymorphism

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

Other links and lift over

hg19: chr1-231377136;