Immunodeficiency 77

Summary

Immunodeficiency 77 (MONDO:0030973) is a disease caused by MPEG1 (GenCC Strong), with 1 cohort gene.

At a glance

• Causal gene: MPEG1 (GenCC Strong)
• Cohort genes: 1
• ClinVar variants: 19

Clinical features

No curated clinical features (Orphanet) for this disease.

Identifiers

Disease identifiers

Field	Value
Canonical name	immunodeficiency 77
Mondo ID	MONDO:0030973
OMIM	619223
UMLS	C5543173
MedGen	1788976
Is cancer (heuristic)	no

Also known as: IMD77 · immunodeficiency 77

Data availability: 19 ClinVar variants · 2 GenCC gene-disease records.

Disease family

Classification path: disease › human disease › disease by etiologic mechanism › disease of genetic or genomic mechanism › hereditary disease › immunodeficiency disease › immunodeficiency 77

Related subtypes (94): B cell deficiency, T-cell immunodeficiency, complement deficiency, myalgic encephalomeyelitis/chronic fatigue syndrome, hypoproteinemia, hypercatabolic, X-linked lymphoproliferative syndrome, Wiskott-Aldrich syndrome, autosomal dominant form, immunodeficiency due to CD25 deficiency, immunodeficiency 67, primary immunodeficiency with natural-killer cell deficiency and adrenal insufficiency, immunodeficiency 35, pyogenic bacterial infections due to MyD88 deficiency, lymphoproliferative syndrome 1, FADD-related immunodeficiency, immunodeficiency 31B, Wiskott-Aldrich syndrome 2, cryptosporidiosis-chronic cholangitis-liver disease syndrome, idiopathic CD4 lymphocytopenia, immunodeficiency 23, DOCK2 deficiency, immunodeficiency 45, TFRC-related combined immunodeficiency, combined immunodeficiency, autoimmune hemolytic anemia-autoimmune thrombocytopenia-primary immunodeficiency syndrome, immunodeficiency due to selective anti-polysaccharide antibody deficiency, immunodeficiency 57, immunodeficiency 14b, autosomal recessive, immunodeficiency 98 with autoinflammation, X-linked, immunodeficiency 102, immunodeficiency 74, COVID-19-related, X-linked, immunodeficiency 66, immunodeficiency 80 with or without congenital cardiomyopathy, immunodeficiency 81, immunodeficiency 82 with systemic inflammation, immunodeficiency 84, immunodeficiency 85 and autoimmunity, immunodeficiency 86, immunodeficiency 87 and autoimmunity, immunodeficiency 88, immunodeficiency 89 and autoimmunity, immunodeficiency 91 and hyperinflammation, immunodeficiency 92, immunodeficiency 93 and hypertrophic cardiomyopathy, immunodeficiency 95, immunodeficiency 96, immunodeficiency 97 with autoinflammation, immunodeficiency 99 with hypogammaglobulinemia and autoimmune cytopenias, immunodeficiency 101 (varicella zoster virus-specific), immunodeficiency 75, immunodeficiency 76, immunodeficiency 106, susceptibility to viral infections, immunodeficiency 78 with autoimmunity and developmental delay, immunodeficiency 107, susceptibility to invasive staphylococcus aureus infection, immunodeficiency 15a, immunodeficiency 60, immunodeficiency 62, immunodeficiency 63 with lymphoproliferation and autoimmunity, immunodeficiency 64, immunodeficiency 65, susceptibility to viral infections, immunodeficiency 69, immunodeficiency 70, immunodeficiency 72 with autoinflammation, GATA2 deficiency with susceptibility to MDS/AML, Shwachman-Diamond syndrome 1, immunodeficiency 53, immunodeficiency 11b with atopic dermatitis, IKBKG-related immunodeficiency with or without ectodermal dysplasia, FNIP1-associated syndrome, FASLG-related immunodeficiency, TNFRSF9-related immunodeficiency, DNAJC21-related Shwachman Diamond syndrome, IRF4-related immune disorder, PTEN harmartoma tumor syndrome with immune disorder, primary immunodeficiency due to calcium channel deficiency, chronic mucocutaneous candidiasis and connective tissue disease due to JNK1 haploinsufficiency, immune deficiency due to impaired neutrophil phagocytosis and migration, hatipoglu immunodeficiency syndrome, immunodeficiency 112, immunodeficiency 113 with autoimmunity and autoinflammation, immunodeficiency 114, folate-responsive, immunodeficiency 115 with autoinflammation, immunodeficiency 117, immunodeficiency 118, immunodeficiency 119, immunodeficiency 121 with autoinflammation, immunodeficiency 122, immunodeficiency 123 with HPV-related verrucosis, immunodeficiency 125, immunodeficiency 126, susceptibility to, immunodeficiency 127, immunodeficiency 128, immunodeficiency 132b, immunodeficiency 133 with ectodermal dysplasia with or without peripheral neuropathy, immunodeficiency 134 (Epstein-Barr virus-specific)

Genetics & variants

GWAS landscape

No GWAS associations recorded — common-variant (GWAS) studies don’t cover this disease (typical for Mendelian / rare diseases). See the curated gene cohort and Mendelian overlap below.

Variant details and genetic-evidence tiers

ClinVar germline variants

19 retrieved; paginated sample, class counts are floors:

16 uncertain significance, 1 likely benign, 1 pathogenic, 1 conflicting classifications of pathogenicity

ClinVar	Variant (HGVS)	Gene	Classification	Review
1035588	NM_001039396.2(MPEG1):c.1192C>T (p.Gln398Ter)	MPEG1	Pathogenic	no assertion criteria provided
1035590	NM_001039396.2(MPEG1):c.1213C>A (p.Pro405Thr)	MPEG1	Conflicting classifications of pathogenicity	criteria provided, conflicting classifications
1698719	NM_001039396.2(MPEG1):c.445C>T (p.Arg149Ter)	MPEG1	Uncertain significance	no assertion criteria provided
2431431	NM_001039396.2(MPEG1):c.746A>G (p.Asn249Ser)	MPEG1	Uncertain significance	criteria provided, single submitter
2431677	NM_001039396.2(MPEG1):c.1865T>C (p.Ile622Thr)	MPEG1	Uncertain significance	criteria provided, single submitter
2689441	NM_001039396.2(MPEG1):c.1574C>T (p.Ala525Val)	MPEG1	Uncertain significance	criteria provided, multiple submitters, no conflicts
3065464	NM_001039396.2(MPEG1):c.623G>A (p.Ser208Asn)	MPEG1	Uncertain significance	criteria provided, single submitter
3065892	NM_001039396.2(MPEG1):c.1078T>A (p.Phe360Ile)	MPEG1	Uncertain significance	criteria provided, single submitter
3254819	NM_001039396.2(MPEG1):c.1295_1296del (p.His432fs)	MPEG1	Uncertain significance	criteria provided, single submitter
3891709	NM_001039396.2(MPEG1):c.1248C>G (p.Tyr416Ter)	MPEG1	Uncertain significance	criteria provided, single submitter
3900715	NM_001039396.2(MPEG1):c.679C>T (p.Gln227Ter)	MPEG1	Uncertain significance	criteria provided, single submitter
4056620	NM_001039396.2(MPEG1):c.1136G>T (p.Gly379Val)	MPEG1	Uncertain significance	criteria provided, single submitter
4056621	NM_001039396.2(MPEG1):c.1258C>T (p.His420Tyr)	MPEG1	Uncertain significance	criteria provided, multiple submitters, no conflicts
4056622	NM_001039396.2(MPEG1):c.1589G>A (p.Gly530Glu)	MPEG1	Uncertain significance	criteria provided, single submitter
4056623	NM_001039396.2(MPEG1):c.1940G>C (p.Gly647Ala)	MPEG1	Uncertain significance	criteria provided, single submitter
4056624	NM_001039396.2(MPEG1):c.945C>T (p.Asn315=)	MPEG1	Uncertain significance	criteria provided, single submitter
4079287	NM_001039396.2(MPEG1):c.1444_1446del (p.Leu482del)	MPEG1	Uncertain significance	criteria provided, single submitter
978045	NM_001039396.2(MPEG1):c.1290C>A (p.Tyr430Ter)	MPEG1	Uncertain significance	criteria provided, single submitter
1035586	NM_001039396.2(MPEG1):c.217A>G (p.Thr73Ala)	MPEG1	Likely benign	criteria provided, multiple submitters, no conflicts

Genes & proteins

Mendelian disease overlap and somatic drivers

GenCC: 2 · Orphanet: 0 · OMIM-shared: 0 · Dual-evidence (GWAS+Mendelian): 0

GenCC gene–disease validity (cohort genes)

the Disease column is the GenCC-asserted condition — a cohort gene’s strongest validity may be for a related predisposition syndrome.

Gene	Classification	Inheritance	Disease	Records
MPEG1	Strong	Autosomal dominant	immunodeficiency 77	2

Cohort genes → proteins

1 cohort genes, 1 distinct canonical proteins.

Evidence partition

Subset	Genes
multi_evidence	1

Cohort genes (full)

Symbol	HGNC	Ensembl	UniProt	Name	Evidence
MPEG1	HGNC:29619	ENSG00000197629	Q2M385	Macrophage-expressed gene 1 protein	gencc,clinvar

Cohort function summary

Lead sentence per gene, UniProt-curated.

Symbol	Protein name	Function (lead sentence)
MPEG1	Macrophage-expressed gene 1 protein	Pore-forming protein involved in both innate and adaptive immunity.

Protein-family classification

Druggable: 1 · Difficult: 0 · Unknown: 0 · Druggable fraction: 1.0

Family distribution

Cohort families vs a genome-wide background (hypergeometric, BH-FDR; fold = observed/expected). Counts kept; sorted by enrichment, so the catch-all Other/Unknown bucket no longer leads.

Family	Genes	Fold	FDR
Complement	1	268.0×	0.004

Per-gene assignment

Symbol	Family	Druggable?	EC	InterPro (top 3)
MPEG1	Complement	yes		MACPF, MPEG1

Expression context

Cohort genes with no expression data: 0.

1 cohort gene are a single-cell marker in ≥1 SCXA experiment.

Breadth distribution (Bgee present_calls)

Bucket	Genes
narrow (1-5 tissues)	0
moderate (6-20)	0
broad (>20)	1
unknown	0

Top tissues across cohort

Tissue	Cohort genes
ileal mucosa	1
leukocyte	1
monocyte	1

Per-gene tissue summary (top 30)

Symbol	Bgee breadth	FANTOM5 breadth	SCXA	Top tissues
MPEG1	219	broad	marker	monocyte, leukocyte, ileal mucosa

Protein interactions among cohort

Intra-cohort edges: 0.

Hub genes (top 10 by interactor count)

Symbol	Interactor count
MPEG1	981

Structural data

PDB: 1 · AlphaFold-only: 0 · No structure: 0

Cohort genes with PDB structures (top 30)

Symbol	UniProt	PDB entries
MPEG1	Q2M385	5

Function

Pathway analysis

Distinct Reactome pathways touched by cohort: 0. Enrichment computed across 1 evidence-associated genes (0 with Reactome annotation).

GO biological processes by enrichment

Over-representation of cohort genes vs the genome-wide background (hypergeometric test, Benjamini-Hochberg FDR; fold = observed/expected over 1 annotated cohort genes). Counts and members are kept as ground-truth; sorted by enrichment.

GO term	Cohort genes	Fold	FDR	Sample cohort genes
dendritic cell antigen processing and presentation	1	16852.0×	2e-04	MPEG1
antigen processing and presentation of exogenous peptide antigen	1	16852.0×	2e-04	MPEG1
antigen processing and presentation of exogenous peptide antigen via MHC class I	1	2407.4×	0.001	MPEG1
antibacterial innate immune response	1	1532.0×	0.001	MPEG1
defense response to Gram-negative bacterium	1	168.5×	0.009	MPEG1
defense response to Gram-positive bacterium	1	127.7×	0.010	MPEG1
defense response to bacterium	1	108.0×	0.011	MPEG1
adaptive immune response	1	84.3×	0.012	MPEG1

Therapeutics

Drug target analysis

Approved (phase 4): 0 · Phase ≥3: 0 · Phased (≥1): 0 · Undrugged: 1

Druggability breadth: 1 of 1 evidence-associated genes (100%) have a ChEMBL target (buckets above are over the deeply-mined display cohort).

Top cohort targets by molecule count

Symbol	Molecules	Max phase
MPEG1	0	0

Bioactivity and enzyme data

Enzyme cohort genes (≥1 EC): 0.

Cohort genes with ChEMBL bioactivity (full, sorted by assay count)

Symbol	Assays	Type breakdown
MPEG1	3	Binding:3

Pharmacogenomics

Cohort genes with a PharmGKB record: 1; with CPIC/DPWG dosing guidelines: 0.

No cohort gene has a CPIC/DPWG genotype-guided dosing guideline (PharmGKB).

Chemical tractability of cohort targets

0 approved/phased compounds have measured bioactivity against a cohort gene (and aren’t yet in disease-level trials). This is a research / tractability signal, NOT a therapeutic recommendation — a bioactivity row often reflects off-target or screening binding (e.g. promiscuous kinase inhibitors against a cohort kinase), implying no disease mechanism.

Druggability pyramid

Cohort genes binned by druggability tier (high → low):

Tier	Definition	Genes	Symbols
A	Approved (phase 4 drug)	0
B	Phased (≥1) drug, not yet approved	0
C	Druggable family + PDB, no drug	1	MPEG1
D	Druggable family + AlphaFold only, no drug	0
E	Difficult family or no structure, no drug	0

Undrugged target profiles

1 cohort genes are undrugged. Ranked by ‘starting-point quality’ (assay depth + drugged-partner adjacency).

Symbol	ChEMBL assays	Drugged partners (top 3)
MPEG1	3	—

Clinical trials & evidence

Clinical trials

Clinical trials: 0.