NM_002706.6:c.955C>A

Variant names:

• chr2-44209318-C-A
• rs757494045
• NM_002706.6:c.955C>A

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4 BP7

The NM_002706.6(PPM1B):​c.955C>A​(p.Arg319Arg) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000496 in 1,613,554 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: 𝑓 0.000020 (0 hom., cov: 32)
  • Exomes 𝑓: 0.0000034 (0 hom.)
• Consequence: PPM1B NM_002706.6 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.01
• Publications: 2 publications found

Genes affected

PPM1B (HGNC:9276): (protein phosphatase, Mg2+/Mn2+ dependent 1B) The protein encoded by this gene is a member of the PP2C family of Ser/Thr protein phosphatases. PP2C family members are known to be negative regulators of cell stress response pathways. This phosphatase has been shown to dephosphorylate cyclin-dependent kinases (CDKs), and thus may be involved in cell cycle control. Overexpression of this phosphatase is reported to cause cell-growth arrest or cell death. Alternative splicing results in multiple transcript variants encoding different isoforms. Additional transcript variants have been described, but currently do not represent full-length sequences. [provided by RefSeq, Jul 2008]

ENSG00000285542 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.1).
• BP7: Synonymous conserved (PhyloP=2.01 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002706.6. 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
	PPM1B	NM_002706.6	MANE Select	c.955C>A	p.Arg319Arg	synonymous	Exon 3 of 6	NP_002697.1	O75688-1
	PPM1B	NM_177968.4		c.955C>A	p.Arg319Arg	synonymous	Exon 3 of 6	NP_808907.1	O75688-2
	PPM1B	NM_001033557.3		c.955C>A	p.Arg319Arg	synonymous	Exon 3 of 6	NP_001028729.1	O75688-4

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PPM1B	ENST00000282412.9	TSL:1 MANE Select	c.955C>A	p.Arg319Arg	synonymous	Exon 3 of 6	ENSP00000282412.4	O75688-1
	PPM1B	ENST00000378551.6	TSL:1	c.955C>A	p.Arg319Arg	synonymous	Exon 3 of 6	ENSP00000367813.2	O75688-2
	PPM1B	ENST00000409432.7	TSL:1	c.955C>A	p.Arg319Arg	synonymous	Exon 3 of 6	ENSP00000387287.3	O75688-4

Frequencies

GnomAD3 genomes AF: 0.0000198 AC: 3 AN: 151770 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000726

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.00000342 AC: 5 AN: 1461666 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 727142

African (AFR) AF: 0.000149 AC: 5 AN: 33472

American (AMR) AF: 0.00 AC: 0 AN: 44696

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26130

East Asian (EAS) AF: 0.00 AC: 0 AN: 39690

South Asian (SAS) AF: 0.00 AC: 0 AN: 86250

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53382

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1111892

Other (OTH) AF: 0.00 AC: 0 AN: 60386

GnomAD4 genome AF: 0.0000198 AC: 3 AN: 151888 Hom.: 0 Cov.: 32 AF XY: 0.0000404 AC XY: 3 AN XY: 74198

African (AFR) AF: 0.0000724 AC: 3 AN: 41418

American (AMR) AF: 0.00 AC: 0 AN: 15268

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5168

South Asian (SAS) AF: 0.00 AC: 0 AN: 4818

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10440

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 67990

Other (OTH) AF: 0.00 AC: 0 AN: 2108

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000756

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.10
CADD	Benign	9.4
DANN	Benign	0.66
PhyloP100		2.0
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
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

dbSNP: rs757494045; hg19: chr2-44436457;