B-lymphoblastic leukemia/lymphoma with hypodiploidy

Summary

B-lymphoblastic leukemia/lymphoma with hypodiploidy (MONDO:0035944) is a cancer with 1 cohort gene (1 CIViC-evidence somatic driver; 1 ClinVar predisposition record).

At a glance

• Classification: Cancer
• Prevalence: Unknown (Worldwide) [Orphanet-validated]
• Cohort genes: 1
• ClinVar variants: 1

Clinical features

No curated clinical features (Orphanet) for this disease.

Identifiers

Disease identifiers

Field	Value
Canonical name	B-lymphoblastic leukemia/lymphoma with hypodiploidy
Mondo ID	MONDO:0035944
Orphanet	585942
DOID	DOID:0080647
NCIT	C80338
UMLS	C2698312
MedGen	437498
GARD	0022346
Is cancer (heuristic)	yes

Also known as: Hypodiploid ALL

Data availability: 1 ClinVar variant.

Disease family

Classification path: human disease › disease by etiologic mechanism › cancer or benign tumor › neoplastic disease or syndrome › neoplasm › hematopoietic and lymphoid system neoplasm › hematopoietic and lymphoid cell neoplasm › lymphoid neoplasm › precursor lymphoblastic lymphoma/leukemia › B-lymphoblastic leukemia/lymphoma with recurrent genetic abnormality › B-lymphoblastic leukemia/lymphoma with hypodiploidy

Related subtypes (5): B-lymphoblastic leukemia/lymphoma with t(9;22)(q34.1;q11.2), B-lymphoblastic leukemia/lymphoma with t(v;11q23.3), B-lymphoblastic leukemia/lymphoma with t(12;21)(p13.2;q22.1), B-lymphoblastic leukemia/lymphoma with hyperdiploidy, B-lymphoblastic leukemia/lymphoma with t(5;14)(q31.1;q32.3)

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

1 retrieved; paginated sample, class counts are floors:

1 uncertain significance

ClinVar	Variant (HGVS)	Gene	Classification	Review
239666	NM_004168.4(SDHA):c.287C>T (p.Thr96Ile)	SDHA	Uncertain significance	criteria provided, multiple submitters, no conflicts

Genes & proteins

Mendelian disease overlap and somatic drivers

GenCC: 0 · Orphanet: 6 · OMIM-shared: 0 · Dual-evidence (GWAS+Mendelian): 0

Somatic driver evidence (intOGen + CIViC, cohort fanout)

Gene	intOGen role	Cancer types	CIViC
SDHA	Act	CHRCC,HCC,LGGNOS	CIViC #5176

Orphanet rare-disease linkage (cohort genes)

Gene	Orphanet ID	Rare disease
SDHA	Orphanet:139411	Carney triad
SDHA	Orphanet:154	Familial isolated dilated cardiomyopathy
SDHA	Orphanet:29072	Hereditary pheochromocytoma-paraganglioma
SDHA	Orphanet:3208	Isolated succinate-CoQ reductase deficiency
SDHA	Orphanet:44890	Gastrointestinal stromal tumor
SDHA	Orphanet:97286	Carney-Stratakis syndrome

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
SDHA	HGNC:10680	ENSG00000073578	P31040	Succinate dehydrogenase [ubiquinone] flavoprotein subunit, mitochondrial	clinvar

Cohort function summary

Lead sentence per gene, UniProt-curated.

Symbol	Protein name	Function (lead sentence)
SDHA	Succinate dehydrogenase [ubiquinone] flavoprotein subunit, mitochondrial	Flavoprotein (FP) subunit of succinate dehydrogenase (SDH) that is involved in complex II of the mitochondrial electron transport chain and is responsible for transferring electrons from succinate to ubiquinone (coenzyme Q).

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)
SDHA	Other/Unknown	no		FRD_SDH_FAD_BS, FAD-dep_OxRdtase_2_FAD-bd, Succ_DH_flav_su_fwd

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
apex of heart	1
heart left ventricle	1
mucosa of transverse colon	1

Per-gene tissue summary (top 30)

Symbol	Bgee breadth	FANTOM5 breadth	SCXA	Top tissues
SDHA	143	ubiquitous	marker	apex of heart, heart left ventricle, mucosa of transverse colon

Protein interactions among cohort

Intra-cohort edges: 0.

Hub genes (top 10 by interactor count)

Symbol	Interactor count
SDHA	6,141

Structural data

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

Cohort genes with PDB structures (top 30)

Symbol	UniProt	PDB entries
SDHA	P31040	5

Function

Pathway analysis

Distinct Reactome pathways touched by cohort: 5. 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
Maturation of TCA enzymes and regulation of TCA cycle	1	571.0×	0.006	SDHA
Citric acid cycle (TCA cycle)	1	423.0×	0.006	SDHA
Respiratory electron transport	1	95.2×	0.014	SDHA
Aerobic respiration and respiratory electron transport	1	88.5×	0.014	SDHA
Metabolism	1	11.6×	0.086	SDHA

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
succinate metabolic process	1	3370.4×	9e-04	SDHA
mitochondrial electron transport, succinate to ubiquinone	1	3370.4×	9e-04	SDHA
respiratory electron transport chain	1	842.6×	0.002	SDHA
tricarboxylic acid cycle	1	510.7×	0.003	SDHA
proton motive force-driven mitochondrial ATP synthesis	1	263.3×	0.005	SDHA
nervous system development	1	45.9×	0.022	SDHA

Therapeutics

Drug target analysis

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

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

Genes with an approved drug

The molecule shown is one approved compound that hits the gene — not necessarily a drug of choice or one indicated for this disease.

Symbol	Example approved molecule
SDHA	LINEZOLID

Top cohort targets by molecule count

Symbol	Molecules	Max phase
SDHA	1	4

Drugs targeting cohort genes (top 30)

Molecule	Max phase	Targets in cohort
LINEZOLID	4	SDHA

Bioactivity and enzyme data

Enzyme cohort genes (≥1 EC): 0.

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

Symbol	Assays	Type breakdown
SDHA	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).

Drug repurposing candidates

1 approved/phased drugs hit cohort targets but don’t yet appear in disease-level clinical trials. Target-inhibition rationale is strongest for cancer driver genes; a bioactivity hit is a screening signal, not a treatment claim.

Compound	Max phase	Cohort target (bioactivity)
LINEZOLID	4	SDHA

Druggability pyramid

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

Tier	Definition	Genes	Symbols
A	Approved (phase 4 drug)	1	SDHA
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	0

Undrugged target profiles

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

Clinical trials & evidence

Clinical trials

Clinical trials: 0.