chr1-202425647-T-C
Variant summary
Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2
The NM_002481.4(PPP1R12B):c.623T>C(p.Ile208Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,652 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).
Frequency
Genomes: not found (cov: 32)
Exomes 𝑓: 6.8e-7 ( 0 hom. )
Consequence
PPP1R12B
NM_002481.4 missense
NM_002481.4 missense
Scores
3
5
7
Clinical Significance
Conservation
PhyloP100: 7.80
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]
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ACMG classification
Classification made for transcript
Verdict is Uncertain_significance. Variant got 2 ACMG points.
PM2
?
Very rare variant in population databases, with high coverage;
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
PPP1R12B | NM_002481.4 | c.623T>C | p.Ile208Thr | missense_variant | 4/24 | ENST00000608999.6 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
PPP1R12B | ENST00000608999.6 | c.623T>C | p.Ile208Thr | missense_variant | 4/24 | 1 | NM_002481.4 | A2 |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD3 genomes
?
Cov.:
32
GnomAD4 exome AF: 6.84e-7 AC: 1AN: 1461652Hom.: 0 Cov.: 30 AF XY: 0.00 AC XY: 0AN XY: 727132
GnomAD4 exome
AF:
AC:
1
AN:
1461652
Hom.:
Cov.:
30
AF XY:
AC XY:
0
AN XY:
727132
Gnomad4 AFR exome
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GnomAD4 genome ? Cov.: 32
GnomAD4 genome
?
Cov.:
32
ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
not specified Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Ambry Genetics | Aug 04, 2023 | The c.623T>C (p.I208T) alteration is located in exon 4 (coding exon 4) of the PPP1R12B gene. This alteration results from a T to C substitution at nucleotide position 623, causing the isoleucine (I) at amino acid position 208 to be replaced by a threonine (T). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Uncertain
Cadd
Uncertain
Dann
Benign
Eigen
Uncertain
Eigen_PC
Uncertain
FATHMM_MKL
Pathogenic
D
LIST_S2
Pathogenic
D;D;D;D
M_CAP
Benign
T
MetaRNN
Uncertain
T;T;T;T
MetaSVM
Benign
T
MutationAssessor
Benign
L;L;L;L
MutationTaster
Benign
D;D;D;D
PrimateAI
Uncertain
T
Sift4G
Benign
T;T;T;T
Polyphen
0.14, 0.074
.;B;.;B
Vest4
MutPred
Gain of disorder (P = 0.0316);Gain of disorder (P = 0.0316);Gain of disorder (P = 0.0316);Gain of disorder (P = 0.0316);
MVP
0.66
MPC
0.22
ClinPred
D
GERP RS
RBP_binding_hub_radar
RBP_regulation_power_radar
Varity_R
gMVP
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at