Retinitis pigmentosa 28

Summary

Retinitis pigmentosa 28 (MONDO:0011630) is a disease caused by FAM161A (GenCC Definitive), with 1 cohort gene.

At a glance

• Causal gene: FAM161A (GenCC Definitive)
• Cohort genes: 1
• ClinVar variants: 250

Clinical features

No curated clinical features (Orphanet) for this disease.

Identifiers

Disease identifiers

Field	Value
Canonical name	retinitis pigmentosa 28
Mondo ID	MONDO:0011630
OMIM	606068
DOID	DOID:0110365
UMLS	C1419614
MedGen	244030
GARD	0010394
Is cancer (heuristic)	no

Also known as: FAM161A retinitis pigmentosa · retinitis pigmentosa 28 · retinitis pigmentosa caused by mutation in FAM161A · retinitis pigmentosa type 28 · RP 28 · RP28

Data availability: 250 ClinVar variants · 3 GenCC gene-disease records.

Disease family

Classification path: disease › human disease › disease by body system or component › nervous system disorder › retinal disorder › retinal degeneration › inherited retinal dystrophy › retinitis pigmentosa › retinitis pigmentosa 28

Related subtypes (101): retinitis pigmentosa 6, cone-rod dystrophy 2, retinitis pigmentosa 1, retinitis pigmentosa 9, retinitis pigmentosa 10, dominant pericentral pigmentary retinopathy, late-adult onset retinitis pigmentosa, autosomal recessive pericentral pigmentary retinopathy, retinitis pigmentosa 3, retinitis pigmentosa 24, retinitis pigmentosa 23, retinitis pigmentosa 34, retinitis pigmentosa 2, retinitis pigmentosa Y-linked, retinitis pigmentosa 13, retinitis pigmentosa 12, retinitis pigmentosa 14, retinitis pigmentosa 11, retinitis pigmentosa 17, retinitis pigmentosa 18, retinitis pigmentosa 19, retinitis pigmentosa 22, retinitis pigmentosa 25, retinitis pigmentosa 30, retinitis pigmentosa 7, retinitis pigmentosa 26, retinitis pigmentosa 32, retinitis pigmentosa 31, retinitis pigmentosa 35, retinitis pigmentosa 33, retinitis pigmentosa 36, retinitis pigmentosa 37, retinitis pigmentosa 41, retinitis pigmentosa 29, retinitis pigmentosa 46, retinitis pigmentosa 42, retinitis pigmentosa 50, retinitis pigmentosa 54, retinitis pigmentosa 51, retinitis pigmentosa 55, retinitis pigmentosa 56, retinitis pigmentosa 57, retinitis pigmentosa 58, cone-rod dystrophy 15, retinitis pigmentosa 4, retinitis pigmentosa 27, retinitis pigmentosa 49, retinitis pigmentosa 47, retinitis pigmentosa 45, retinitis pigmentosa 44, retinitis pigmentosa 20, retinitis pigmentosa 40, retinitis pigmentosa 39, retinitis pigmentosa 43, retinitis pigmentosa 48, retinitis pigmentosa 59, retinitis pigmentosa 38, retinitis pigmentosa 60, retinitis pigmentosa 61, retinitis pigmentosa 62, retinitis pigmentosa 63, cone-rod dystrophy 16, retinitis pigmentosa 66, retinitis pigmentosa with or without situs inversus, retinitis pigmentosa 67, retinitis pigmentosa 68, retinitis pigmentosa 69, retinitis pigmentosa 70, retinal dystrophy and obesity, retinitis pigmentosa 71, retinitis pigmentosa 72, retinitis pigmentosa 73, retinitis pigmentosa 74, retinitis pigmentosa 75, retinitis pigmentosa 76, retinitis pigmentosa 77, retinitis pigmentosa 92, retinitis pigmentosa 93, retinitis pigmentosa 83, retinitis pigmentosa 84, retinitis pigmentosa 85, retinitis pigmentosa 86, retinitis pigmentosa 87 with choroidal involvement, retinitis pigmentosa 88, retinitis pigmentosa 90, retinitis pigmentosa 81, retinitis pigmentosa 78, retinitis pigmentosa 79, retinitis pigmentosa 80, retinitis pigmentosa 94, variable age at onset, retinitis pigmentosa 53, retinitis pigmentosa 65, retinitis pigmentosa 64, retinitis pigmentosa 95, retinitis pigmentosa 96, retinitis pigmentosa 97, retinitis pigmentosa 98, retinitis pigmentosa 99, retinitis pigmentosa 100, retinitis pigmentosa 101, retinitis pigmentosa 7, digenic

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

250 retrieved; paginated sample, class counts are floors:

103 uncertain significance, 50 likely pathogenic, 40 pathogenic/likely pathogenic, 18 likely benign, 16 pathogenic, 12 conflicting classifications of pathogenicity, 10 benign, 1 benign/likely benign

ClinVar	Variant (HGVS)	Gene	Classification	Review
1065737	NM_001201543.2(FAM161A):c.1490C>G (p.Ser497Ter)	FAM161A	Pathogenic/Likely pathogenic	criteria provided, multiple submitters, no conflicts
1068711	NM_001201543.2(FAM161A):c.1849C>T (p.Gln617Ter)	FAM161A	Pathogenic/Likely pathogenic	criteria provided, multiple submitters, no conflicts
1213998	NM_001201543.2(FAM161A):c.1095T>G (p.Tyr365Ter)	FAM161A	Pathogenic	criteria provided, single submitter
1359736	NM_001201543.2(FAM161A):c.1822_1823del (p.Arg608fs)	FAM161A	Pathogenic/Likely pathogenic	criteria provided, multiple submitters, no conflicts
1361348	NM_001201543.2(FAM161A):c.447T>A (p.Tyr149Ter)	FAM161A	Pathogenic/Likely pathogenic	criteria provided, multiple submitters, no conflicts
1404914	NM_001201543.2(FAM161A):c.1759G>T (p.Glu587Ter)	FAM161A	Pathogenic	criteria provided, multiple submitters, no conflicts
1443212	NM_001201543.2(FAM161A):c.368del (p.His122_Leu123insTer)	FAM161A	Pathogenic/Likely pathogenic	criteria provided, multiple submitters, no conflicts
1452486	NM_001201543.2(FAM161A):c.1352dup (p.Leu451fs)	FAM161A	Pathogenic/Likely pathogenic	criteria provided, multiple submitters, no conflicts
1453028	NM_001201543.2(FAM161A):c.299_300del (p.Glu100fs)	FAM161A	Pathogenic/Likely pathogenic	criteria provided, multiple submitters, no conflicts
1456138	NM_001201543.2(FAM161A):c.1084C>T (p.Arg362Ter)	FAM161A	Pathogenic/Likely pathogenic	criteria provided, multiple submitters, no conflicts
1687302	NM_001201543.2(FAM161A):c.1852-2A>T	FAM161A	Pathogenic	criteria provided, single submitter
2009553	NM_001201543.2(FAM161A):c.449del (p.His150fs)	FAM161A	Pathogenic/Likely pathogenic	criteria provided, multiple submitters, no conflicts
2098171	NM_001201543.2(FAM161A):c.1642C>T (p.Gln548Ter)	FAM161A	Pathogenic/Likely pathogenic	criteria provided, multiple submitters, no conflicts
2130565	NM_001201543.2(FAM161A):c.496dup (p.Ser166fs)	FAM161A	Pathogenic/Likely pathogenic	criteria provided, multiple submitters, no conflicts
2182957	NM_001201543.2(FAM161A):c.493C>T (p.Gln165Ter)	FAM161A	Pathogenic/Likely pathogenic	criteria provided, multiple submitters, no conflicts
236499	NM_001201543.2(FAM161A):c.1464G>A (p.Trp488Ter)	FAM161A	Pathogenic/Likely pathogenic	criteria provided, multiple submitters, no conflicts
2675371	NM_001201543.2(FAM161A):c.1109del (p.Asn370fs)	FAM161A	Pathogenic/Likely pathogenic	criteria provided, multiple submitters, no conflicts
2675372	NM_001201543.2(FAM161A):c.287del (p.Phe96fs)	FAM161A	Pathogenic/Likely pathogenic	criteria provided, multiple submitters, no conflicts
2675377	NM_001201543.2(FAM161A):c.1044T>A (p.Tyr348Ter)	FAM161A	Pathogenic/Likely pathogenic	criteria provided, multiple submitters, no conflicts
2675382	NM_001201543.2(FAM161A):c.1525_1530delinsCCCG (p.Cys509fs)	FAM161A	Pathogenic/Likely pathogenic	criteria provided, multiple submitters, no conflicts
2675385	NM_001201543.2(FAM161A):c.556_560del (p.Pro186fs)	FAM161A	Pathogenic/Likely pathogenic	criteria provided, multiple submitters, no conflicts
2675391	NM_001201543.2(FAM161A):c.1610T>A (p.Leu537Ter)	FAM161A	Pathogenic/Likely pathogenic	criteria provided, multiple submitters, no conflicts
2675392	NM_001201543.2(FAM161A):c.688_700dup (p.Pro234fs)	FAM161A	Pathogenic/Likely pathogenic	criteria provided, multiple submitters, no conflicts
2709942	NM_001201543.2(FAM161A):c.1250dup (p.Leu418fs)	FAM161A	Pathogenic/Likely pathogenic	criteria provided, multiple submitters, no conflicts
2753358	NM_001201543.2(FAM161A):c.1804_1805del (p.Glu602fs)	FAM161A	Pathogenic/Likely pathogenic	criteria provided, multiple submitters, no conflicts
2812990	NM_001201543.2(FAM161A):c.1928C>G (p.Ser643Ter)	FAM161A	Pathogenic/Likely pathogenic	criteria provided, multiple submitters, no conflicts
2977716	NM_001201543.2(FAM161A):c.1150dup (p.Thr384fs)	FAM161A	Pathogenic/Likely pathogenic	criteria provided, multiple submitters, no conflicts
2989751	NM_001201543.2(FAM161A):c.760G>T (p.Glu254Ter)	FAM161A	Pathogenic/Likely pathogenic	criteria provided, multiple submitters, no conflicts
2992396	NM_001201543.2(FAM161A):c.1753_1756del	FAM161A	Pathogenic	criteria provided, multiple submitters, no conflicts
2998522	NM_001201543.2(FAM161A):c.1138C>T (p.Arg380Ter)	FAM161A	Pathogenic/Likely pathogenic	criteria provided, multiple submitters, no conflicts

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
FAM161A	Definitive	Autosomal recessive	retinitis pigmentosa 28	4

Orphanet rare-disease linkage (cohort genes)

Gene	Orphanet ID	Rare disease
FAM161A	Orphanet:791	Retinitis pigmentosa

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
FAM161A	HGNC:25808	ENSG00000170264	Q3B820	Protein FAM161A	gencc,clinvar

Cohort function summary

Lead sentence per gene, UniProt-curated.

Symbol	Protein name	Function (lead sentence)
FAM161A	Protein FAM161A	Involved in ciliogenesis.

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)
FAM161A	Other/Unknown	no		FAM161A/B, FAM161

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
pigmented layer of retina	1
retina	1
sperm	1

Per-gene tissue summary (top 30)

Symbol	Bgee breadth	FANTOM5 breadth	SCXA	Top tissues
FAM161A	215	ubiquitous	marker	pigmented layer of retina, retina, sperm

Protein interactions among cohort

Intra-cohort edges: 0.

Hub genes (top 10 by interactor count)

Symbol	Interactor count
FAM161A	3,370

Structural data

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

AlphaFold-only cohort genes (top 30 by pLDDT)

Symbol	UniProt	pLDDT
FAM161A	Q3B820	66.83

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
cilium organization	1	601.9×	0.005	FAM161A
visual perception	1	79.5×	0.014	FAM161A
cilium assembly	1	73.6×	0.014	FAM161A

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
FAM161A	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	FAM161A

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)
FAM161A	0	—

Clinical trials & evidence

Clinical trials

Clinical trials: 0.