Spermatogenic failure 3

Summary

Spermatogenic failure 3 (MONDO:0011720) is a disease with 1 cohort gene.

At a glance

• Cohort genes: 1
• ClinVar variants: 10

Clinical features

No curated clinical features (Orphanet) for this disease.

Identifiers

Disease identifiers

Field	Value
Canonical name	spermatogenic failure 3
Mondo ID	MONDO:0011720
MeSH	C564665
OMIM	606766
DOID	DOID:0070168
UMLS	C4721889
MedGen	1648302
GARD	0018399
Is cancer (heuristic)	no

Also known as: azoospermia caused by mutation in SLC26A8 · SLC26A8 azoospermia · spermatogenic failure 3 · spermatogenic failure type 3 · SPGF3

Data availability: 10 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 › spermatogenic failure › spermatogenic failure 3

Related subtypes (112): spermatogenic failure 6, spermatogenic failure 2, spermatogenic failure 5, spermatogenic failure 1, spermatogenic failure 4, spermatogenic failure, X-linked, 2, spermatogenic failure, Y-linked, 1, spermatogenic failure, Y-linked, 2, spermatogenic failure 7, spermatogenic failure 8, spermatogenic failure 9, spermatogenic failure 10, spermatogenic failure 11, spermatogenic failure 12, spermatogenic failure 13, spermatogenic failure 14, spermatogenic failure 15, spermatogenic failure 16, spermatogenic failure 17, spermatogenic failure 30, spermatogenic failure 31, spermatogenic failure 32, spermatogenic failure 54, spermatogenic failure, X-linked, 4, spermatogenic failure, X-linked, 3, spermatogenic failure 33, spermatogenic failure 34, spermatogenic failure 55, spermatogenic failure 56, spermatogenic failure 57, spermatogenic failure 58, spermatogenic failure 59, spermatogenic failure 60, spermatogenic failure 61, spermatogenic failure 62, spermatogenic failure 63, spermatogenic failure 64, spermatogenic failure 65, spermatogenic failure 66, spermatogenic failure 67, spermatogenic failure 68, spermatogenic failure 69, spermatogenic failure 70, spermatogenic failure 71, spermatogenic failure 72, spermatogenic failure 73, spermatogenic failure 47, spermatogenic failure 48, spermatogenic failure 49, spermatogenic failure 50, spermatogenic failure 51, spermatogenic failure 52, spermatogenic failure 74, spermatogenic failure 75, spermatogenic failure 53, spermatogenic failure 76, spermatogenic failure 77, spermatogenic failure 35, spermatogenic failure 36, spermatogenic failure 37, spermatogenic failure 38, spermatogenic failure 39, spermatogenic failure 40, spermatogenic failure 41, spermatogenic failure 42, spermatogenic failure 43, spermatogenic failure 44, spermatogenic failure 45, spermatogenic failure 46, spermatogenic failure 18, spermatogenic failure 19, spermatogenic failure 20, spermatogenic failure 21, spermatogenic failure 22, spermatogenic failure 23, spermatogenic failure 24, spermatogenic failure 25, spermatogenic failure 26, spermatogenic failure 27, spermatogenic failure 28, spermatogenic failure 29, X-linked spermatogenic failure 1, spermatogenic failure 98, spermatogenic failure 78, spermatogenic failure 79, spermatogenic failure 80, spermatogenic failure, X-linked, 5, spermatogenic failure, X-linked, 6, spermatogenic failure 81, spermatogenic failure, X-linked, 7, spermatogenic failure 82, spermatogenic failure 83, spermatogenic failure 84, spermatogenic failure 85, spermatogenic failure 86, spermatogenic failure 87, spermatogenic failure 88, spermatogenic failure 89, spermatogenic failure 90, spermatogenic failure, X-linked, 8, spermatogenic failure 91, spermatogenic failure 92, spermatogenic failure 93, spermatogenic failure 94, spermatogenic failure 95, spermatogenic failure 96, spermatogenic failure 97, spermatogenic failure, X-linked, 9, spermatogenic failure 99, spermatogenic failure 100, spermatogenic failure 101, spermatogenic failure 102

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

10 retrieved; paginated sample, class counts are floors:

6 uncertain significance, 3 pathogenic, 1 conflicting classifications of pathogenicity

ClinVar	Variant (HGVS)	Gene	Classification	Review
1686928	NM_052961.4(SLC26A8):c.290T>C (p.Leu97Pro)	SLC26A8	Pathogenic	no assertion criteria provided
1686929	NM_052961.4(SLC26A8):c.1664del (p.Ile555fs)	SLC26A8	Pathogenic	no assertion criteria provided
50909	NM_052961.4(SLC26A8):c.260G>A (p.Arg87Gln)	SLC26A8	Pathogenic	no assertion criteria provided
50910	NM_052961.4(SLC26A8):c.2434G>A (p.Glu812Lys)	SLC26A8	Conflicting classifications of pathogenicity	criteria provided, conflicting classifications
1686930	NM_052961.4(SLC26A8):c.212G>T (p.Arg71Leu)	SLC26A8	Uncertain significance	criteria provided, single submitter
1709524	NM_052961.4(SLC26A8):c.2031T>G (p.Tyr677Ter)	SLC26A8	Uncertain significance	criteria provided, single submitter
3362755	NM_052961.4(SLC26A8):c.1639-2A>G	SLC26A8	Uncertain significance	criteria provided, single submitter
3892461	NM_052961.4(SLC26A8):c.1826G>T (p.Cys609Phe)	SLC26A8	Uncertain significance	criteria provided, single submitter
3892462	NM_052961.4(SLC26A8):c.905A>G (p.Asn302Ser)	SLC26A8	Uncertain significance	criteria provided, multiple submitters, no conflicts
50911	NM_052961.4(SLC26A8):c.2860C>T (p.Arg954Cys)	SLC26A8	Uncertain significance	criteria provided, single submitter

Genes & proteins

Mendelian disease overlap and somatic drivers

GenCC: 4 · 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
SLC26A8	Limited	Autosomal dominant	spermatogenic failure 3	4

Orphanet rare-disease linkage (cohort genes)

Gene	Orphanet ID	Rare disease
SLC26A8	Orphanet:276234	Non-syndromic male infertility due to sperm motility disorder

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
SLC26A8	HGNC:14468	ENSG00000112053	Q96RN1	Testis anion transporter 1	gencc,clinvar

Cohort function summary

Lead sentence per gene, UniProt-curated.

Symbol	Protein name	Function (lead sentence)
SLC26A8	Testis anion transporter 1	Antiporter that mediates the exchange of sulfate and oxalate against chloride ions across a membrane.

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)
SLC26A8	Other/Unknown	no		SLC26A/SulP_fam, STAS_dom, SLC26A/SulP_dom

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
left testis	1
right testis	1
testis	1

Per-gene tissue summary (top 30)

Symbol	Bgee breadth	FANTOM5 breadth	SCXA	Top tissues
SLC26A8	157	tissue_specific	marker	left testis, right testis, testis

Protein interactions among cohort

Intra-cohort edges: 0.

Hub genes (top 10 by interactor count)

Symbol	Interactor count
SLC26A8	1,317

Structural data

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

AlphaFold-only cohort genes (top 30 by pLDDT)

Symbol	UniProt	pLDDT
SLC26A8	Q96RN1	68.44

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
oxalate transport	1	2407.4×	0.003	SLC26A8
sulfate transmembrane transport	1	1203.7×	0.003	SLC26A8
chloride transport	1	455.5×	0.005	SLC26A8
meiotic cell cycle	1	244.2×	0.006	SLC26A8
chloride transmembrane transport	1	237.3×	0.006	SLC26A8
spermatogenesis	1	35.2×	0.033	SLC26A8
cell differentiation	1	29.1×	0.034	SLC26A8

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
SLC26A8	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	SLC26A8

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)
SLC26A8	0	—

Clinical trials & evidence

Clinical trials

Clinical trials: 0.