rs755775376

Variant names:

• chr9-136410689-G-A
• rs755775376
• NM_015160.3:c.21G>A

Your query was ambiguous. Multiple possible variants found:

• chr9-136410689-G-A
• chr9-136410689-G-T

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2 BP4_Strong BP7

The NM_015160.3(PMPCA):​c.21G>A​(p.Ala7Ala) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000158 in 1,264,200 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: 33)
  • Exomes 𝑓: 0.0000016 (0 hom.)
• Consequence: PMPCA NM_015160.3 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.347

Genes affected

PMPCA (HGNC:18667): (peptidase, mitochondrial processing subunit alpha) The protein encoded by this gene is found in the mitochondrion, where it represents the alpha subunit of a proteolytic heterodimer. This heterodimer is responsible for cleaving the transit peptide from nuclear-encoded mitochondrial proteins. Defects in this gene are a cause of spinocerebellar ataxia, autosomal recessive 2. [provided by RefSeq, Mar 2016]

ENTR1 (HGNC:10667): (endosome associated trafficking regulator 1) Involved in several processes, including endocytic recycling; positive regulation of cilium assembly; and positive regulation of protein localization to cilium. Located in endosome; microtubule organizing center; and midbody. Colocalizes with retromer complex. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Likely_benign. Variant got -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.7).
• BP7: Synonymous conserved (PhyloP=0.347 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PMPCA	NM_015160.3	c.21G>A	p.Ala7Ala	synonymous_variant	Exon 1 of 13	ENST00000371717.8	NP_055975.1
ENTR1	NM_001039707.2	c.-292C>T		upstream_gene_variant		ENST00000357365.8	NP_001034796.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PMPCA	ENST00000371717.8	c.21G>A	p.Ala7Ala	synonymous_variant	Exon 1 of 13	1	NM_015160.3	ENSP00000360782.3
ENTR1	ENST00000357365.8	c.-292C>T		upstream_gene_variant		5	NM_001039707.2	ENSP00000349929.3

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD3 exomes AF: 0.00000812 AC: 1 AN: 123114 Hom.: 0 AF XY: 0.0000144 AC XY: 1 AN XY: 69636

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.0000700

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000158 AC: 2 AN: 1264200 Hom.: 0 Cov.: 30 AF XY: 0.00000161 AC XY: 1 AN XY: 621096

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000178

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 9.82e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.70
CADD	Benign	8.6
DANN	Benign	0.75
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		2.1

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: rs755775376; hg19: chr9-139305141;