chr22-21923195-T-C

Variant names:

• chr22-21923195-T-C
• rs1469398160
• NM_014634.4:c.1262A>G

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_014634.4(PPM1F):​c.1262A>G​(p.Glu421Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,446 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: PPM1F NM_014634.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.606
• Publications: 0 publications found

Genes affected

PPM1F (HGNC:19388): (protein phosphatase, Mg2+/Mn2+ dependent 1F) 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 can interact with Rho guanine nucleotide exchange factors (PIX), and thus block the effects of p21-activated kinase 1 (PAK), a protein kinase mediating biological effects downstream of Rho GTPases. Calcium/calmodulin-dependent protein kinase II gamma (CAMK2G/CAMK-II) is found to be one of the substrates of this phosphatase. The overexpression of this phosphatase or CAMK2G has been shown to mediate caspase-dependent apoptosis. An alternatively spliced transcript variant has been identified, but its full-length nature has not been determined. [provided by RefSeq, Jul 2008]

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 (MetaRNN=0.1352984).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_014634.4. 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
	PPM1F	NM_014634.4	MANE Select	c.1262A>G	p.Glu421Gly	missense	Exon 8 of 8	NP_055449.1	P49593-1
	PPM1F	NM_001410836.1		c.758A>G	p.Glu253Gly	missense	Exon 7 of 7	NP_001397765.1	B5MCT7

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PPM1F	ENST00000263212.10	TSL:1 MANE Select	c.1262A>G	p.Glu421Gly	missense	Exon 8 of 8	ENSP00000263212.5	P49593-1
	PPM1F	ENST00000407142.5	TSL:5	c.758A>G	p.Glu253Gly	missense	Exon 6 of 6	ENSP00000384930.1	B5MCT7
	PPM1F	ENST00000496143.5	TSL:4	n.474A>G		non_coding_transcript_exon	Exon 3 of 3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.00000400 AC: 1 AN: 249814 AF XY: 0.00

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.0000544

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461446 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 727046

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44718

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26132

East Asian (EAS) AF: 0.0000252 AC: 1 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53020

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

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1111980

Other (OTH) AF: 0.00 AC: 0 AN: 60390

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.065
BayesDel_addAF	Benign	-0.33	T
BayesDel_noAF	Benign	-0.54
CADD	Benign	17
DANN	Uncertain	1.0
DEOGEN2	Benign	0.14	T
Eigen	Benign	-0.31
Eigen_PC	Benign	-0.17
FATHMM_MKL	Benign	0.71	D
LIST_S2	Benign	0.58	T
M_CAP	Benign	0.0090	T
MetaRNN	Benign	0.14	T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	1.7	L
PhyloP100		0.61
PrimateAI	Benign	0.35	T
PROVEAN	Benign	-2.3	N
REVEL	Benign	0.045
Sift	Uncertain	0.023	D
Sift4G	Benign	0.070	T
Polyphen		0.0030	B
Vest4		0.14
MutPred		0.27		Loss of stability (P = 0.126)
MVP		0.49
MPC		0.59
ClinPred		0.32	T
GERP RS		4.0
Varity_R		0.091
gMVP		0.47
Mutation Taster		=83/17	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		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: rs1469398160; hg19: chr22-22277568;