Basic information

Full name
alpha-2-macroglobulin
Ensembl
ENSG00000175899.15
Summary
The protein encoded by this gene is a protease inhibitor and cytokine transporter. It uses a bait-and-trap mechanism to inhibit a broad spectrum of proteases, including trypsin, thrombin and collagenase. It can also inhibit inflammatory cytokines, and it thus disrupts inflammatory cascades. Mutations in this gene are a cause of alpha-2-macroglobulin deficiency. This gene is implicated in Alzheimer's disease (AD) due to its ability to mediate the clearance and degradation of A-beta, the major component of beta-amyloid deposits. A related pseudogene, which is also located on the p arm of chromosome 12, has been identified. [provided by RefSeq, Nov 2016]
Annotation
Ligand

Protein product

Phosphosites on the primary protein product
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Tumor and normal comparison

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Signed p-values
Data type
Meta P
BRCA
CCRCC
COAD
GBM
HNSCC
LSCC
LUAD
OV
PDAC
UCEC
RNA-2.1e-28-2.7e-11---5.2e-3-2.1e-34-5.8e-33--1.1e-5-
protein-5e-64-2.3e-8-4.2e-26--2.2e-22-7.5e-35-2e-34-1.8e-80.022-2.1e-7

* P-values are from Wilcoxon rank sum test and can be clicked to show the box plots. Positive values mean higher abundance in tumor. BRCA and GBM do not have normal samples.

mRNA expression at gene level
BRCACCRCCCOADGBMHNSCCLSCCLUADOVPDACUCEC10111213141516171819log2(RSEM+1)tumornormal
Protein expression
BRCACCRCCCOADGBMHNSCCLSCCLUADOVPDACUCEC26.52727.52828.52929.53030.53131.53232.5log2(MS1 intensity)tumornormal

* Mild outlier: filled circle; Extreme outlier: empty circle.

Phenotype and mutation association

Manhattan plot summarizing associations of phenotypes and mutations across all cohorts and omics data types

BRCACCRCCCOADGBMHNSCCLSCCLUADOVPDACUCEC024681012141618202224260-2-4-6-8-10-12-14-16-18-20-22-24-26Pan-cancer01020304050607080901001100-10-20-30-40-50-60-70-80-90-100-110proteinRNASCNVclinicalpathwaycell typegenomicmutation-log10 of P-value

* Data points of significant associations above and below the dotted lines can be hovered to show the phenotype.

Associations of the protein abundance of A2M with phenotypes and mutations

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Signed p-values
Phenotype
Meta P
BRCA
CCRCC
COAD
GBM
HNSCC
LSCC
LUAD
OV
PDAC
UCEC
HALLMARK_KRAS_SIGNALING_UP1.6e-232.5e-80.0940.376.5e-93.9e-31e-80.0170.0010.190.04
HALLMARK_TNFA_SIGNALING_VIA_NFKB9.8e-231.5e-60.0540.0191.2e-50.0298.8e-94.7e-31.4e-4-0.942.1e-3
HALLMARK_HYPOXIA2.2e-181.7e-58.9e-30.154.4e-40.0436.2e-53.4e-35.6e-50.750.013
HALLMARK_APOPTOSIS2.8e-184.9e-50.10.223.5e-62.4e-31.1e-50.0772.5e-40.20.063
HALLMARK_MYOGENESIS4.9e-188.8e-30.0740.36.6e-41.1e-33.1e-70.0259.7e-62.2e-4-0.81
HALLMARK_TGF_BETA_SIGNALING1.2e-172.7e-50.40.433.6e-40.26.5e-64.4e-46.3e-90.230.18
HALLMARK_IL6_JAK_STAT3_SIGNALING2.1e-174.1e-70.220.0668.4e-79.6e-32.8e-60.10.0250.820.016
xcell: Endothelial cell2.2e-175.7e-40.640.0320.0655.1e-34.3e-125.8e-50.110.0310.17
HALLMARK_P53_PATHWAY2.2e-174.7e-32.1e-36.8e-31.4e-57.7e-30.0340.0332.5e-30.772.8e-4
HALLMARK_COMPLEMENT2.5e-174.2e-70.360.157.4e-80.0111.0e-60.0380.0370.540.074
Showing 1 to 10 of 256 rows

* P-values could be from test for Spearman correlation, Wilcoxon rank sum test, Jonckheere-Terpstra trend test or Cox regression depending on the data type. P-values for individual cohorts can be clicked to show the data plots. The matrix icons in each row can be clicked to show a heatmap summary of associations across all cohorts and omics. The rows in the table can be expanded to show results from other omics.

Cis-association

Associations between omics data of A2M

BRCA0.38-0.02-0.00proteinmRNASCNVmethylationCCRCC-0.04-0.03-0.08proteinmRNASCNVmethylationCOAD-0.070.030.04proteinmRNASCNVmethylationGBM0.480.090.12proteinmRNASCNVmethylationHNSCC0.21-0.12-0.18proteinmRNASCNVmethylationLSCC0.56-0.11-0.22proteinmRNASCNVmethylationLUAD0.37-0.08-0.06proteinmRNASCNVmethylationOV0.19-0.110.04proteinmRNASCNVmethylationPDAC0.320.08-0.10proteinmRNASCNVmethylationUCEC-0.02-0.110.10proteinmRNASCNVmethylation

* The numbers are Spearman correlation coefficients and can be clicked to show the scatter plots. The color and size of the circles correlate with the coefficients.

Trans-association

Associations of the protein abundance of A2M and the protein abundance of other genes

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Signed p-values
Gene
Meta P
BRCA
CCRCC
COAD
GBM
HNSCC
LSCC
LUAD
OV
PDAC
UCEC
No matching records found

* P-values are from test for Spearman correlation. P-values for individual cohorts can be clicked to show the data plots. The matrix icons in each row can be clicked to show a heatmap summary of associations across all cohorts and omics. The rows in the table can be expanded to show results from other omics.

Gene set enrichment analysis

Submit genes and the common logarithm of the p-values of their association with to WebGestalt.