rs705747

Positions:

• chr1-202536155-T-C

Variant summary

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

The NM_002481.4(PPP1R12B):​c.2491-22722T>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.535 in 152,024 control chromosomes in the GnomAD database, including 22,195 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 0.53 (22195 hom., cov: 32)
• Consequence: PPP1R12B NM_002481.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.509

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=-1.02).
• BA1: GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.687 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PPP1R12B	NM_002481.4	c.2491-22722T>C		intron_variant		ENST00000608999.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PPP1R12B	ENST00000608999.6	c.2491-22722T>C		intron_variant		1	NM_002481.4	A2

Frequencies

GnomAD3 genomes AF: 0.535 AC: 81248 AN: 151906 Hom.: 22163 Cov.: 32

Gnomad AFR AF: 0.576

Gnomad AMI AF: 0.402

Gnomad AMR AF: 0.625

Gnomad ASJ AF: 0.384

Gnomad EAS AF: 0.706

Gnomad SAS AF: 0.635

Gnomad FIN AF: 0.466

Gnomad MID AF: 0.389

Gnomad NFE AF: 0.491

Gnomad OTH AF: 0.504

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

GnomAD4 genome AF: 0.535 AC: 81327 AN: 152024 Hom.: 22195 Cov.: 32 AF XY: 0.536 AC XY: 39805 AN XY: 74308

Gnomad4 AFR AF: 0.576

Gnomad4 AMR AF: 0.626

Gnomad4 ASJ AF: 0.384

Gnomad4 EAS AF: 0.706

Gnomad4 SAS AF: 0.635

Gnomad4 FIN AF: 0.466

Gnomad4 NFE AF: 0.491

Gnomad4 OTH AF: 0.507

Alfa AF: 0.515 Hom.: 2901

Bravo AF: 0.546

Asia WGS AF: 0.657 AC: 2283 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	0.78
DANN	Benign	0.20

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: rs705747; hg19: chr1-202505283;