Stats by Source
Total, split by cell line (COSMIC CL / DepMap / PubMed) vs tissue (COSMIC primary tissue)
Total = all mutations for this gene across every source.
Cell line = COSMIC Cell Lines Project + DepMap + PubMed.
Tissue = COSMIC primary-tissue (patient tumour) samples.
Total can exceed cell line + tissue: COSMIC tissue-derived models sit only in global, and a peptide can be shared across both.
| Total | Cell line | Tissue | |
|---|---|---|---|
| Mutations | 681 | 89 | 546 |
| Samples | 219 | 44 | 171 |
| Peptides | 207 | 30 | 162 |
Function
PPM1B · 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].
Isoforms & Proteins
4 transcripts · UniProt mapping is sequence-verified (AA-safe)
Each Ensembl transcript (ENST) this gene is mutated on, with its matched UniProt accession.
The mapping is sequence-verified: the UniProt sequence is identical to the transcript translation, so amino-acid positions line up exactly. A * marks an unreviewed (TrEMBL) entry.
Counts are mutations and unique mutant peptides on each transcript.
Gene Properties
Recurrent Mutations
All 191 amino-acid changes on canonical ENST00000282412 · needle height = samples · drag the mini-map to zoom
A lollipop / needle plot – the standard way to show recurrent mutations along a protein (as used by cBioPortal and MutationMapper).
X-axis = amino-acid position in the protein.
Needle height & head size = how often that exact amino-acid change was observed (its recurrence). Tall/large heads are mutational hotspots.
The most recurrent changes are labelled; hover any needle for the change, position and counts.
Mutation frequency across cancer types
% of samples with a missense/complex mutation in PPM1B · cell line vs tissue
For each cancer type, the fraction of samples that carry at least one missense/complex mutation anywhere in PPM1B – counted as distinct samples (a sample counts once no matter how many mutations it has).
Split into cell line and tissue; each cell shows mutated / total and the percentage. Cohorts with <20 samples are omitted. Ordered by combined frequency.
| Cancer type | Cell lines | Tissue samples |
|---|---|---|
| Endometrial Carcinoma | 4/42 10% | 11/612 2% |
| Bladder Carcinoma | 1/58 2% | 11/956 1% |
| Squamous Cell Lung Carcinoma | 0/57 0% | 10/810 1% |
| Acute Myeloid Leukemia | 1/90 1% | 0/0 0% |
| Cervical Carcinoma | 0/35 0% | 5/422 1% |
| Non-Small Cell Lung Carcinoma | 3/304 1% | 15/1390 1% |
| Gastric Carcinoma | 0/74 0% | 18/1809 1% |
| Plasma Cell Myeloma | 2/44 5% | 1/305 0% |
| Melanoma | 4/210 2% | 14/1899 1% |
| Hodgkins Lymphoma | 0/16 0% | 1/122 1% |
| Neuroendocrine Tumour | 2/154 1% | 3/577 1% |
| Small Cell Lung Carcinoma | 0/9 0% | 5/752 1% |
| Colorectal Carcinoma | 7/143 5% | 14/3239 0% |
| Other Solid Cancers | 0/94 0% | 10/1515 1% |
| Head and Neck Carcinoma | 0/85 0% | 9/1574 1% |
| Germ Cell Tumour | 0/25 0% | 1/169 1% |
| Burkitts Lymphoma | 1/32 3% | 0/196 0% |
| Esophageal Squamous Cell Carcinoma | 0/51 0% | 11/2550 0% |
| Breast Carcinoma | 6/144 4% | 8/3264 0% |
| Glioma | 0/52 0% | 7/2127 0% |
| Ewings Sarcoma | 1/63 2% | 0/262 0% |
| Ovarian Carcinoma | 0/109 0% | 3/998 0% |
| Hepatocellular Carcinoma | 0/46 0% | 5/2210 0% |
| Kidney Carcinoma | 2/85 2% | 2/1862 0% |
| Non-Cancerous | 0/104 0% | 2/830 0% |
| B-Cell Non-Hodgkins Lymphoma | 4/88 5% | 1/2534 0% |
| Thyroid Gland Carcinoma | 2/45 4% | 1/1592 0% |
| B-Lymphoblastic Leukemia | 2/55 4% | 2/2640 0% |
| Other Sarcomas | 0/69 0% | 1/699 0% |
| Pancreatic Carcinoma | 0/89 0% | 2/1611 0% |
Mutation Distribution
Where PPM1B is mutated · all tissues, split by cell line vs tissue
How many mutations in PPM1B were found in each tissue, across the whole database.
Each bar is a tissue (cell-line and tissue names are merged to the standard tissue), split into cell line and tissue (patient tumour) contributions.
This shows the cancer-context where this gene is recurrently altered.
GTEx Expression
Median TPM across 54 healthy tissues
Median gene expression (TPM) in normal, non-cancer human tissues from the GTEx project.
Useful for judging tumour specificity – a strong neoantigen target ideally comes from a gene with low expression in healthy tissues.
Scroll or drag the mini-axis below the chart to browse all tissues.
Mutations
All 681 mutations in PPM1B
Every mutation record for this gene, across all samples and sources.
The Sample column links to the cell line (cell-line samples) or the tissue type (tissue samples).
Use the Type / Source filters, the search box, and column sorting to explore; each CAN-IMMUNE ID opens the full mutation & peptide view.
| ID | Sample | Transcript | AA Change | CDS | Type | Source | Mutant Peptide | Wild-type Peptide |
|---|