rs497824

Positions:

• chr1-202556182-G-A
• chr1-202556182-G-C

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_002481.4(PPP1R12B):​c.2491-2695G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0306 in 152,192 control chromosomes in the GnomAD database, including 192 homozygotes. 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: 𝑓 0.031 (192 hom., cov: 32)
• Consequence: PPP1R12B NM_002481.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.209

Genes affected

PPP1R12B (HGNC:7619): (protein phosphatase 1 regulatory subunit 12B) Myosin phosphatase is a protein complex comprised of three subunits: a catalytic subunit (PP1c-delta, protein phosphatase 1, catalytic subunit delta), a large regulatory subunit (MYPT, myosin phosphatase target) and small regulatory subunit (sm-M20). Two isoforms of MYPT have been isolated--MYPT1 and MYPT2, the first of which is widely expressed, and the second of which may be specific to heart, skeletal muscle, and brain. Each of the MYPT isoforms functions to bind PP1c-delta and increase phosphatase activity. This locus encodes both MYTP2 and M20. Alternatively spliced transcript variants encoding different isoforms have been identified. Related pseudogenes have been defined on the Y chromosome. [provided by RefSeq, Oct 2011]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-1.0).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0937 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PPP1R12B	NM_002481.4	c.2491-2695G>A		intron_variant		ENST00000608999.6	NP_002472.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PPP1R12B	ENST00000608999.6	c.2491-2695G>A		intron_variant		1	NM_002481.4	ENSP00000476755	A2

Frequencies

GnomAD3 genomes AF: 0.0306 AC: 4656 AN: 152074 Hom.: 192 Cov.: 32

Gnomad AFR AF: 0.0964

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0169

Gnomad ASJ AF: 0.000288

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00186

Gnomad FIN AF: 0.00141

Gnomad MID AF: 0.00633

Gnomad NFE AF: 0.00485

Gnomad OTH AF: 0.0249

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.0306 AC: 4662 AN: 152192 Hom.: 192 Cov.: 32 AF XY: 0.0291 AC XY: 2165 AN XY: 74404

Gnomad4 AFR AF: 0.0962

Gnomad4 AMR AF: 0.0168

Gnomad4 ASJ AF: 0.000288

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00186

Gnomad4 FIN AF: 0.00141

Gnomad4 NFE AF: 0.00485

Gnomad4 OTH AF: 0.0246

Alfa AF: 0.0150 Hom.: 10

Bravo AF: 0.0340

Asia WGS AF: 0.00693 AC: 25 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-1.0
CADD	Benign	0.22
DANN	Benign	0.37

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: rs497824; hg19: chr1-202525310;