Intellectual disability, autosomal recessive 34

Summary

Intellectual disability, autosomal recessive 34 (MONDO:0013785) is a disease caused by CRADD (GenCC Strong), with 1 cohort gene.

At a glance

• Causal gene: CRADD (GenCC Strong)
• Cohort genes: 1
• ClinVar variants: 13

Clinical features

No curated clinical features (Orphanet) for this disease.

Identifiers

Disease identifiers

Field	Value
Canonical name	intellectual disability, autosomal recessive 34
Mondo ID	MONDO:0013785
OMIM	614499
DOID	DOID:0081200
NCIT	C153179
UMLS	C3281044
MedGen	482674
GARD	0022563
Is cancer (heuristic)	no

Also known as: autosomal recessive non-syndromic intellectual disability caused by mutation in CRADD · CRADD autosomal recessive non-syndromic intellectual disability · intellectual developmental disorder, autosomal recessive 34, with variant lissencephaly · intellectual disability, autosomal recessive 34 · intellectual disability, autosomal recessive type 34 · mental retardation, autosomal recessive 34 · mental retardation, autosomal recessive 34, with variant lissencephaly · mental retardation, autosomal recessive type 34 · MRT34

Data availability: 13 ClinVar variants · 2 GenCC gene-disease records.

Disease family

Classification path: disease › human disease › disease by body system or component › nervous system disorder › neurodevelopmental disorder › intellectual disability › non-syndromic intellectual disability › autosomal recessive non-syndromic intellectual disability › intellectual disability, autosomal recessive 34

Related subtypes (67): intellectual disability, autosomal recessive 1, intellectual disability, autosomal recessive 2, intellectual disability, autosomal recessive 3, intellectual disability, autosomal recessive 12, intellectual disability, autosomal recessive 5, intellectual disability, autosomal recessive 6, intellectual disability, autosomal recessive 7, intellectual disability, autosomal recessive 9, intellectual disability, autosomal recessive 10, intellectual disability, autosomal recessive 11, intellectual disability, autosomal recessive 4, intellectual disability, autosomal recessive 13, intellectual disability, autosomal recessive 14, Rafiq syndrome, intellectual disability, autosomal recessive 16, intellectual disability, autosomal recessive 18, intellectual disability, autosomal recessive 31, intellectual disability, autosomal recessive 29, intellectual disability, autosomal recessive 27, intellectual disability, autosomal recessive 33, intellectual disability, autosomal recessive 30, intellectual disability, autosomal recessive 19, intellectual disability, autosomal recessive 23, intellectual disability, autosomal recessive 24, intellectual disability, autosomal recessive 25, intellectual disability, autosomal recessive 28, intellectual disability, autosomal recessive 42, intellectual disability, autosomal recessive 43, intellectual disability, autosomal recessive 44, intellectual disability, autosomal recessive 45, intellectual disability, autosomal recessive 46, intellectual disability, autosomal recessive 47, Al-Raqad syndrome, intellectual disability, autosomal recessive 50, intellectual disability, autosomal recessive 51, intellectual disability, autosomal recessive 52, intellectual disability, autosomal recessive 54, intellectual disability, autosomal recessive 56, intellectual developmental disorder, autosomal recessive 74, intellectual disability, autosomal recessive 57, intellectual disability, autosomal recessive 58, intellectual disability, autosomal recessive 59, pontocerebellar hypoplasia type 1, intellectual disability, autosomal recessive 64, intellectual disability, autosomal recessive 65, intellectual developmental disorder, autosomal recessive 73, intellectual developmental disorder, autosomal recessive 75, with neuropsychiatric features and variant lissencephaly, intellectual disability, autosomal recessive 61, intellectual developmental disorder, autosomal recessive 76, intellectual developmental disorder, autosomal recessive 77, intellectual disability, autosomal recessive 66, intellectual developmental disorder, autosomal recessive 67, intellectual developmental disorder, autosomal recessive 68, intellectual developmental disorder, autosomal recessive 69, intellectual developmental disorder, autosomal recessive 70, intellectual developmental disorder, autosomal recessive 71, intellectual developmental disorder, autosomal recessive 72, glycosylphosphatidylinositol biosynthesis defect 16, intellectual disability, autosomal recessive 60, intellectual disability, autosomal recessive 63, adenosine kinase deficiency, intellectual developmental disorder, autosomal recessive 78, intellectual developmental disorder, autosomal recessive 79, intellectual developmental disorder, autosomal recessive 80, with variant lissencephaly, intellectual developmental disorder, autosomal recessive 81, intellectual developmental disorder, autosomal recessive 82, intellectual developmental disorder, autosomal recessive 83

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

13 retrieved; paginated sample, class counts are floors:

7 uncertain significance, 2 conflicting classifications of pathogenicity, 2 pathogenic, 1 pathogenic/likely pathogenic, 1 likely pathogenic

ClinVar	Variant (HGVS)	Gene	Classification	Review
3233508	NM_003805.5(CRADD):c.393G>A (p.Trp131Ter)	CRADD	Pathogenic/Likely pathogenic	criteria provided, multiple submitters, no conflicts
372190	NM_003805.5(CRADD):c.508C>T (p.Arg170Cys)	CRADD	Pathogenic	no assertion criteria provided
372191	NM_003805.5(CRADD):c.509G>A (p.Arg170His)	CRADD	Pathogenic	criteria provided, multiple submitters, no conflicts
3575538	NM_003805.5(CRADD):c.50del (p.Gly17fs)	CRADD	Likely pathogenic	criteria provided, single submitter
30360	NM_003805.5(CRADD):c.382G>C (p.Gly128Arg)	CRADD	Conflicting classifications of pathogenicity	criteria provided, conflicting classifications
434822	NM_003805.5(CRADD):c.285dup (p.Asp96fs)	CRADD	Conflicting classifications of pathogenicity	criteria provided, conflicting classifications
1029755	NM_003805.5(CRADD):c.-2A>G	CRADD	Uncertain significance	criteria provided, single submitter
1029756	NM_003805.5(CRADD):c.-6-7T>C	CRADD	Uncertain significance	criteria provided, multiple submitters, no conflicts
1034028	NM_003805.5(CRADD):c.316A>T (p.Ile106Phe)	CRADD	Uncertain significance	criteria provided, multiple submitters, no conflicts
1330154	NM_003805.5(CRADD):c.503G>A (p.Arg168Gln)	CRADD	Uncertain significance	criteria provided, multiple submitters, no conflicts
3575536	NM_003805.5(CRADD):c.21A>G (p.Gln7=)	CRADD	Uncertain significance	criteria provided, single submitter
372192	NM_003805.5(CRADD):c.491T>G (p.Phe164Cys)	CRADD	Uncertain significance	criteria provided, single submitter
434823	NM_003805.5(CRADD):c.497G>A (p.Arg166His)	CRADD	Uncertain significance	criteria provided, multiple submitters, no conflicts

Genes & proteins

Mendelian disease overlap and somatic drivers

GenCC: 3 · Orphanet: 1 · 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
CRADD	Strong	Autosomal recessive	intellectual disability, autosomal recessive 34	3

Orphanet rare-disease linkage (cohort genes)

Gene	Orphanet ID	Rare disease
CRADD	Orphanet:88616	Autosomal recessive non-syndromic intellectual disability

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
CRADD	HGNC:2340	ENSG00000169372	P78560	Death domain-containing protein CRADD	gencc,clinvar

Cohort function summary

Lead sentence per gene, UniProt-curated.

Symbol	Protein name	Function (lead sentence)
CRADD	Death domain-containing protein CRADD	Adapter protein that associates with PIDD1 and the caspase CASP2 to form the PIDDosome, a complex that activates CASP2 and triggers apoptosis.

Protein-family classification

Druggable: 0 · Difficult: 0 · Unknown: 1 · Druggable fraction: 0.0

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
Other/Unknown	1	1.8×	0.558

Per-gene assignment

Symbol	Family	Druggable?	EC	InterPro (top 3)
CRADD	Other/Unknown	no		Death_dom, CARD, DEATH-like_dom_sf

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
cardiac ventricle	1
heart left ventricle	1
male germ line stem cell (sensu Vertebrata) in testis	1

Per-gene tissue summary (top 30)

Symbol	Bgee breadth	FANTOM5 breadth	SCXA	Top tissues
CRADD	260	ubiquitous	marker	male germ line stem cell (sensu Vertebrata) in testis, heart left ventricle, cardiac ventricle

Protein interactions among cohort

Intra-cohort edges: 0.

Hub genes (top 10 by interactor count)

Symbol	Interactor count
CRADD	639

Structural data

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

Cohort genes with PDB structures (top 30)

Symbol	UniProt	PDB entries
CRADD	P78560	3

Function

Pathway analysis

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

Pathways 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.

Pathway	Cohort genes	Fold	FDR	Sample cohort genes
TP53 Regulates Transcription of Caspase Activators and Caspases	1	951.7×	0.001	CRADD

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
positive regulation of apoptotic signaling pathway	1	581.1×	0.006	CRADD
extrinsic apoptotic signaling pathway via death domain receptors	1	401.2×	0.006	CRADD
DNA damage response, signal transduction by p53 class mediator	1	358.6×	0.006	CRADD
apoptotic signaling pathway	1	224.7×	0.006	CRADD
cellular response to mechanical stimulus	1	216.1×	0.006	CRADD
positive regulation of apoptotic process	1	56.7×	0.019	CRADD
DNA damage response	1	53.5×	0.019	CRADD

Therapeutics

Drug target analysis

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

Druggability breadth: 0 of 1 evidence-associated genes (0%) have a ChEMBL target (buckets above are over the deeply-mined display cohort).

Top cohort targets by molecule count

Symbol	Molecules	Max phase
CRADD	0	0

Bioactivity and enzyme data

Enzyme cohort genes (≥1 EC): 0.

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	0
D	Druggable family + AlphaFold only, no drug	0
E	Difficult family or no structure, no drug	1	CRADD

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)
CRADD	0	—

Clinical trials & evidence

Clinical trials

Clinical trials: 0.