PPP1R15B

protein phosphatase 1 regulatory subunit 15B, the group of Protein phosphatase 1 regulatory subunits

Basic information

Region (hg38): 1:204396492-204411887

Links

ENSG00000158615NCBI:84919OMIM:613257HGNC:14951Uniprot:Q5SWA1AlphaFoldGenCCjaxSfariGnomADPubmedClinVar

Phenotypes

GenCC

Source: genCC

  • microcephaly, short stature, and impaired glucose metabolism 2 (Strong), mode of inheritance: AR
  • primary microcephaly-mild intellectual disability-young-onset diabetes syndrome (Supportive), mode of inheritance: AR
  • microcephaly, short stature, and impaired glucose metabolism 2 (Limited), mode of inheritance: AR

Clinical Genomic Database

Source: CGD

ConditionInheritanceIntervention CategoriesIntervention/Rationale Manifestation CategoriesReferences
Microcephaly, short stature, and impaired glucose metabolism 2AREndocrineAwareness of the risk of diabetes may allow prompt recognition and treatmentCraniofacial; Endocrine; Musculoskeletal; Neurologic26159176; 26307080

ClinVar

This is a list of variants' phenotypes submitted to ClinVar and linked to the PPP1R15B gene.

  • Microcephaly, short stature, and impaired glucose metabolism 2 (1 variants)

Variants pathogenicity by type

Statistics on ClinVar variants can assist in determining whether a specific variant type in the PPP1R15B gene is commonly pathogenic or not.

In the table, we include only reliable ClinVar variants with their consequences to MANE Select, Mane Plus Clinical transcripts, or transcripts with TSL equals 1. Click the count to view the source variants.

Warning: slight differences between displayed counts and the number of variants in ClinVar may occur, primarily due to (1) the application of a different transcript and/or consequence by our variant effect predictor or (2) differences in clinical significance: we classify Benign/Likely benign variants as Likely benign and Pathogenic/Likely pathogenic variants as Likely pathogenic.

Variant type Pathogenic Likely pathogenic VUS Likely benign Benign Sum
synonymous
27
clinvar
2
clinvar
29
missense
1
clinvar
90
clinvar
5
clinvar
6
clinvar
102
nonsense
2
clinvar
2
start loss
1
clinvar
1
frameshift
2
clinvar
2
inframe indel
1
clinvar
1
splice donor/acceptor (+/-2bp)
0
splice region
0
non coding
2
clinvar
1
clinvar
3
Total 1 0 96 34 9

Variants in PPP1R15B

This is a list of pathogenic ClinVar variants found in the PPP1R15B region.

You can filter this list by clicking the number of variants in the Variants pathogenicity by type table.

Position Type Phenotype Significance ClinVar
1-204406097-A-G Uncertain significance (Nov 02, 2022)2870212
1-204406100-G-T Inborn genetic diseases Uncertain significance (Dec 21, 2022)2214015
1-204406111-T-G Uncertain significance (Jul 19, 2022)2018167
1-204406134-C-G Inborn genetic diseases Uncertain significance (Sep 14, 2022)2311819
1-204406236-T-C Likely benign (Nov 28, 2022)2875411
1-204406237-G-A Inborn genetic diseases Uncertain significance (Jul 14, 2022)2186014
1-204406251-T-C Likely benign (Feb 28, 2023)798855
1-204406261-C-A Uncertain significance (Jun 29, 2023)2018668
1-204406261-C-T Conflicting classifications of pathogenicity (Nov 22, 2023)807902
1-204406262-G-A Microcephaly, short stature, and impaired glucose metabolism 2 Pathogenic (May 22, 2022)222030
1-204406274-C-T Inborn genetic diseases Uncertain significance (Apr 15, 2024)3309371
1-204406281-A-G Likely benign (Nov 08, 2022)1974664
1-204409480-C-T Likely benign (Jul 01, 2023)2734414
1-204409483-G-A Likely benign (Oct 21, 2022)2000293
1-204409499-C-G Inborn genetic diseases Uncertain significance (Mar 15, 2024)3309368
1-204409526-G-C not specified Benign (Jan 23, 2024)716902
1-204409533-C-T Uncertain significance (Nov 27, 2023)2870043
1-204409544-A-G Inborn genetic diseases Uncertain significance (Dec 15, 2023)3217509
1-204409546-C-T Likely benign (Aug 02, 2023)2749583
1-204409576-C-T Likely benign (Nov 27, 2023)1971986
1-204409583-T-A Inborn genetic diseases Uncertain significance (Nov 18, 2023)2060810
1-204409620-T-C Uncertain significance (May 29, 2023)2905788
1-204409622-G-A Uncertain significance (Nov 27, 2023)2006520
1-204409645-CTTT-C Uncertain significance (Nov 07, 2022)2890553
1-204409647-T-C Benign (Jan 29, 2024)2039413

GnomAD

Source: gnomAD

GeneTypeBio TypeTranscript Coding Exons Length
PPP1R15Bprotein_codingprotein_codingENST00000367188 28405
pLI Probability
LOF Intolerant
pRec Probability
LOF Recessive
Individuals with
no LOFs
Individuals with
Homozygous LOFs
Individuals with
Heterozygous LOFs
Defined p
0.1510.8491257340141257480.0000557
Z-Score Observed Expected Observed/Expected Mutation Rate Total Possible in Transcript
Missense-1.354313591.200.00001644637
Missense in Polyphen114105.061.08511446
Synonymous-0.7901541421.080.000006551441
Loss of Function3.33623.40.2570.00000109291

LoF frequencies by population

EthnicitySum of pLOFs p
African & African-American0.0001480.000148
Ashkenazi Jewish0.000.00
East Asian0.0002170.000217
Finnish0.000.00
European (Non-Finnish)0.00003520.0000352
Middle Eastern0.0002170.000217
South Asian0.00003270.0000327
Other0.0001630.000163

dbNSFP

Source: dbNSFP

Function
FUNCTION: Maintains low levels of EIF2S1 phosphorylation in unstressed cells by promoting its dephosphorylation by PP1. {ECO:0000269|PubMed:26159176, ECO:0000269|PubMed:26307080}.;
Disease
DISEASE: Microcephaly, short stature, and impaired glucose metabolism 2 (MSSGM2) [MIM:616817]: A disease characterized by microcephaly, mental retardation, short stature, and disturbed glucose metabolism. {ECO:0000269|PubMed:26159176, ECO:0000269|PubMed:26307080}. Note=The disease is caused by mutations affecting the gene represented in this entry.; DISEASE: Note=Defects in PPP1R15B has been found in a patient with isolated coloboma, a defect of the eye characterized by the absence of ocular structures due to abnormal morphogenesis of the optic cup and stalk, and the fusion of the fetal fissure (optic fissure). Isolated colobomas may be associated with an abnormally small eye (microphthalmia) or small cornea. {ECO:0000269|PubMed:28493397}.;

Recessive Scores

pRec
0.0818

Intolerance Scores

loftool
0.349
rvis_EVS
0.73
rvis_percentile_EVS
86.3

Haploinsufficiency Scores

pHI
0.202
hipred
N
hipred_score
0.233
ghis
0.417

Essentials

essential_gene_CRISPR
E
essential_gene_CRISPR2
E
essential_gene_gene_trap
E
gene_indispensability_pred
N
gene_indispensability_score
0.235

Gene Damage Prediction

AllRecessiveDominant
MendelianMediumMediumMedium
Primary ImmunodeficiencyMediumMediumMedium
CancerMediumMediumMedium

Mouse Genome Informatics

Gene name
Ppp1r15b
Phenotype
integument phenotype (the observable morphological and physiological characteristics of the skin and its associated structures, such as the hair, nails, sweat glands, sebaceous glands and other secretory glands that are manifested through development and lifespan); growth/size/body region phenotype; homeostasis/metabolism phenotype; mortality/aging (the observable characteristics related to the ability of a mammalian organism to live and age that are manifested throughout development and life span); hematopoietic system phenotype; liver/biliary system phenotype; behavior/neurological phenotype (the observable actions or reactions of mammalian organisms that are manifested through development and lifespan);

Gene ontology

Biological process
negative regulation of protein phosphorylation;ER overload response;positive regulation of phosphoprotein phosphatase activity;response to endoplasmic reticulum stress;response to hydrogen peroxide;peptidyl-serine dephosphorylation;negative regulation of PERK-mediated unfolded protein response;negative regulation of endoplasmic reticulum stress-induced eIF2 alpha phosphorylation
Cellular component
protein phosphatase type 1 complex;cytoplasm;endoplasmic reticulum
Molecular function
protein binding;protein phosphatase regulator activity