--- license: permission_granted topic_id: companion_breed_health_domestic_shorthair_omia3881_cat category: companion-breed-health title: "Domestic Shorthair — Cystinuria, type I - A (hereditary; OMIA-verified breed predisposition)" lang: en source: "OMIA (Online Mendelian Inheritance in Animals, University of Sydney) breed-specific hereditary-disorder record, saved verbatim to source_file; C1 substring-verified. Pulled 2026-08-02 from local OMIA database dump." source_file: pdf-raw/breed-health/domestic_shorthair_omia3881_3881.txt date_parsed: 2026-08-02 tokens_estimated: 455 verification: method: substring_match claims: 5 passed: 5 date: 2026-08-02 recovered: false path: companion-breed-health/companion_breed_health_domestic_shorthair_omia3881_cat/01_companion_breed_health_domestic_shorthair_omia3881_cat.md source_document: "OMIA — Online Mendelian Inheritance in Animals (University of Sydney)" citation: authority: "OMIA — Online Mendelian Inheritance in Animals (University of Sydney)" title: "Domestic Shorthair — Cystinuria, type I - A (hereditary; OMIA-verified breed predisposition)" url: "https://omia.org/OMIA000256/9685/" retrieved: "2026-08-02" ref: "OMIA breed-specific hereditary-disorder records (omia.org), derived from local OMIA database dump; dataset: https://doi.org/10.25910/2AMR-PV70" doc_type: "academic animal-genetics database (breed-specific disorder entries)" needs_review: false
Domestic Shorthair — Cystinuria, type I - A (hereditary; OMIA-verified breed predisposition)
Source: first-hand OMIA (University of Sydney) breed-specific hereditary-disorder record, saved verbatim to source_file; every claim below is a C1 byte-substring of it.
Claims
Breed: Domestic Shorthair (Cat)Disorder:Mode of inheritance: Autosomal recessiveClin feat: Cystinuria is a metabolic disease that leads to the formation of cystine crystals and uroliths in the urinary tract due to defective transport of the amino acids cystine, ornithine, lysine and arginine (COLAs) across the renal tubular epithelium (Mizukami et al., 2015). In type I-A cystinuria, the SLC3A1 gene mutation detrimentally affects the function of a transporter protein expressed in the apical membrane of epithelial cells in the proximal tubule and intestine (Mizukami et al., 2015). The formation of cystine crystals and uroliths leads to clinical signs including stranguria, haematuria, dysuria, pollakiuria and potentially lower urinary tract obstruction and renal failure (Mizukami et al., 2015). Mizukami et al. (2015) investigated a single intact male DSH cat with early onset of clinical signs at about 2 months of age. Cystine uroliths were surgically removed at 4 months of age and the cat was euthanized at 6 months of age. It is hypothesised that secondary clinical signs of lethargy, hypersalivation and seizures relate to secondary hyperammonaemia due to impaired intestinal absorption and excessive renal excretion of COLAs (Mizukami et al., 2015). These secondary signs of hyperammonaemia, which can be fatal, can occur before the development of any uroliths (Mizukami et al., 2015). Cystine calculi in cats have only been found in the lower urinary tract (Mizukami et al., 2015). Rodney et al. (2021) report that a Greek cat presenting with cystinuria was homozygous for the variant identified by Mizukami et al. (2015). IT thanks DVM student James Austen, who provided the basis of this contribution in May 2023.Defect: yes
Associated gene(s)
Derived from OMIA database dump (omia.xml, local); structured field, not verbatim prose. First-hand values below are verbatim substrings of the topic's pdf-raw/omia/<phene_id>.txt source file.
- Gene: Entrez Gene ID 389723979 (no symbol in OMIA GeneSynonym) — OMIA Phene_Gene
- OMIA molecular-genetics note: Mizukami et al. (2015): a "missense mutation (c.1342C>T) ... [resulting] in a deleterious amino acid substitution (p.Arg448Trp) [omia.variant:141] of a highly conserved arginine residue in the rBAT protein encoded by the SLC3A1 gene".
Evidence (references)
Derived from OMIA database dump (omia.xml, local); structured field, not verbatim prose. First-hand values below are verbatim substrings of the topic's pdf-raw/omia/<phene_id>.txt source file.
- 2015. Feline cystinuria caused by a missense mutation in the SLC3A1 gene. J Vet Intern Med — PubMed:PMID25417848 | DOI:10.1111/jvim.12501 — OMIA Phene_Article / Article
- 2021. A domestic cat whole exome sequencing resource for trait discovery. Sci Rep — PubMed:PMID33785770 | DOI:10.1038/s41598-021-86200-7 — OMIA Phene_Article / Article
- 2021. Cystinuria in dogs and cats: What do we know after almost 200 years?. Animals (Basel) — PubMed:PMID34438894 | DOI:10.3390/ani11082437 — OMIA Phene_Article / Article
Comparative medicine (human OMIM)
Derived from OMIA database dump (omia.xml, local); structured field, not verbatim prose. First-hand values below are verbatim substrings of the topic's pdf-raw/omia/<phene_id>.txt source file.
- OMIM:220100 (type: trait) — OMIA Group_OMIM (via OMIA_ID)
- OMIM:104614 (type: gene) — OMIA Group_OMIM (via OMIA_ID)
verification_derived: method: derived_from_dataset source: "OMIA database dump (omia.xml, local); fields Gene/Variant/Article/OMIM" note: "Structured fields (gene, variant rsID/protein change, PubMed/DOI references, OMIM cross-link) extracted from OMIA dump and presented with first-hand values; not verbatim prose."