SFTPA1

Surfactant protein A1 Q8IWL2 SFTA1_HUMAN
Protein Coding Chr 10 10q22.3 Swiss-Prot reviewed Entrez 653509
Mutations
604
CL 59 · Tissue 512
Samples
213
CL 36 · Tissue 166
Peptides
107
unique mutant peptides
Transcripts
3
isoforms mutated

Stats by Source

Total, split by cell line (COSMIC CL / DepMap / PubMed) vs tissue (COSMIC primary tissue)

How the counts split by source
Stats by Source

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.

TotalCell lineTissue
Mutations60459512
Samples21336166
Peptides1071894

Function

SFTPA1 · Surfactant protein A1

This gene encodes a lung surfactant protein that is a member of a subfamily of C-type lectins called collectins. The encoded protein binds specific carbohydrate moieties found on lipids and on the surface of microorganisms. This protein plays an essential role in surfactant homeostasis and in the defense against respiratory pathogens. Mutations in this gene are associated with idiopathic pulmonary fibrosis. Alternate splicing results in multiple transcript variants. [provided by RefSeq, May 2010].

Isoforms & Proteins

3 transcripts · UniProt mapping is sequence-verified (AA-safe)

About the isoform mapping
Isoforms & Proteins

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.

TranscriptUniProtMutationsPeptides
ENST00000398636 Q8IWL2 216 98
ENST00000419470 Q8IWL2-2 197 102
ENST00000428376 Q8IWL2 191 96

Gene Properties

Type
Protein Coding
Chromosome
10
Cytoband
10q22.3
Entrez ID
Aliases
COLEC4ILD1PSP-APSPASFTP1SFTPA1B

Recurrent Mutations

All 98 amino-acid changes on canonical ENST00000398636 · needle height = samples · drag the mini-map to zoom

What this lollipop shows
Recurrent Mutations

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 SFTPA1 · cell line vs tissue

How this frequency is counted
Cancer-type mutation frequency

For each cancer type, the fraction of samples that carry at least one missense/complex mutation anywhere in SFTPA1 – 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 typeCell linesTissue samples
T-Cell Non-Hodgkins Lymphoma
2/26 8%
0/0 0%
Gastrointestinal Stromal Tumour
0/0 0%
5/133 4%
Other Solid Cancers
0/94 0%
41/1515 3%
T-Lymphoblastic Leukemia
1/40 2%
0/0 0%
Glioblastoma
2/98 2%
0/0 0%
Oral Cavity Carcinoma
1/54 2%
0/0 0%
Melanoma
11/210 5%
18/1899 1%
Biliary Tract Carcinoma
1/54 2%
12/950 1%
Rhabdomyosarcoma
2/33 6%
0/171 0%
Squamous Cell Lung Carcinoma
0/57 0%
8/810 1%
Adrenocortical Carcinoma
0/3 0%
1/112 1%
Endometrial Carcinoma
0/42 0%
5/612 1%
Hodgkins Lymphoma
0/16 0%
1/122 1%
Bladder Carcinoma
0/58 0%
6/956 1%
Head and Neck Carcinoma
0/85 0%
9/1574 1%
Non-Small Cell Lung Carcinoma
2/304 1%
7/1390 0%
Colorectal Carcinoma
2/143 1%
15/3239 0%
Gastric Carcinoma
0/74 0%
7/1809 0%
Hepatocellular Carcinoma
1/46 2%
6/2210 0%
Ewings Sarcoma
1/63 2%
0/262 0%
Thyroid Gland Carcinoma
0/45 0%
5/1592 0%
Other Sarcomas
0/69 0%
2/699 0%
Small Cell Lung Carcinoma
0/9 0%
2/752 0%
Other Blood Cancers
0/61 0%
7/2725 0%
Breast Carcinoma
1/144 1%
7/3264 0%
Cervical Carcinoma
0/35 0%
1/422 0%
Ovarian Carcinoma
0/109 0%
2/998 0%
Glioma
0/52 0%
4/2127 0%
B-Cell Non-Hodgkins Lymphoma
4/88 5%
0/2534 0%
Esophageal Carcinoma
0/23 0%
1/769 0%

Mutation Distribution

Where SFTPA1 is mutated · all tissues, split by cell line vs tissue

Mutation counts by tissue
Mutation Distribution

How many mutations in SFTPA1 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 53 healthy tissues

GTEx Portal ↗
About the expression data
GTEx Expression

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 604 mutations in SFTPA1

About the mutation list
Mutations

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.

IDSampleTranscriptAA Change CDSTypeSourceMutant PeptideWild-type Peptide