16-28878680-C-A

Variant names:

• chr16-28878680-C-A
• NM_004320.6:c.9C>A

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2 BP4_Moderate BP6_Moderate BP7

The NM_004320.6(ATP2A1):​c.9C>A​(p.Ala3Ala) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★). Synonymous variant affecting the same amino acid position (i.e. A3A) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: ATP2A1 NM_004320.6 synonymous
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 0.103
• Publications: 0 publications found

Genes affected

ATP2A1 (HGNC:811): (ATPase sarcoplasmic/endoplasmic reticulum Ca2+ transporting 1) This gene encodes one of the SERCA Ca(2+)-ATPases, which are intracellular pumps located in the sarcoplasmic or endoplasmic reticula of muscle cells. This enzyme catalyzes the hydrolysis of ATP coupled with the translocation of calcium from the cytosol to the sarcoplasmic reticulum lumen, and is involved in muscular excitation and contraction. Mutations in this gene cause some autosomal recessive forms of Brody disease, characterized by increasing impairment of muscular relaxation during exercise. Alternative splicing results in three transcript variants encoding different isoforms. [provided by RefSeq, Oct 2013]

ATP2A1-AS1 (HGNC:51370): (ATP2A1 antisense RNA 1)

ACMG classification

Our verdict: Likely_benign. The variant received -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.44).
• BP6: Variant 16-28878680-C-A is Benign according to our data. Variant chr16-28878680-C-A is described in ClinVar as [Likely_benign]. Clinvar id is 3699063.Status of the report is criteria_provided_single_submitter, 1 stars.
• BP7: Synonymous conserved (PhyloP=0.103 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ATP2A1	NM_004320.6	c.9C>A	p.Ala3Ala	synonymous_variant	Exon 1 of 23	ENST00000395503.9	NP_004311.1
ATP2A1	NM_173201.5	c.9C>A	p.Ala3Ala	synonymous_variant	Exon 1 of 22		NP_775293.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ATP2A1	ENST00000395503.9	c.9C>A	p.Ala3Ala	synonymous_variant	Exon 1 of 23	1	NM_004320.6	ENSP00000378879.5
ATP2A1	ENST00000357084.7	c.9C>A	p.Ala3Ala	synonymous_variant	Exon 1 of 22	2		ENSP00000349595.3
ATP2A1-AS1	ENST00000691192.2	n.1257G>T		non_coding_transcript_exon_variant	Exon 1 of 1
ATP2A1	ENST00000563975.1	c.-385C>A		upstream_gene_variant		2		ENSP00000458035.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

Brody myopathy Benign:1

Jun 21, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.44
CADD	Benign	4.4
DANN	Benign	0.76
PhyloP100		0.10
PromoterAI		-0.016	Neutral

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: chr16-28890001;