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Hyperbiliverdinemia is a rare, genetic hepatic disease characterized by the presence of green coloration of the skin, urine, plasma and other body fluids (ascites, breastmilk) or parts (sclerae) due to increased serum levels of biliverdin in association with biliary obstruction and/or liver failure. Association with malnutrition, medication, and congenital biliary atresia has also been reported.
Features include always present findings: Elevated circulating biliverdin concentration and Green urine. 5 total HPO annotations.
Organ System | Phenotype Count | Example Features |
|---|---|---|
Digestive system | 3 | Cholestasis, Decreased liver function, Cholelithiasis |
BLVRA encodes biliverdin reductase A (296 aa). Reduces the gamma-methene bridge of the open tetrapyrrole, biliverdin IXalpha, to bilirubin with the concomitant oxidation of a NADH or NADPH cofactor. Does not reduce bilirubin IXbeta. Highest expression in Spleen (106.8 TPM) and Colon Sigmoid (91.7 TPM).
Hyperbiliverdinemia has been associated with mutations in the BLVRA gene on chromosome 7.
The BLVRA protein participates in BLVRA:Zn2+, BLVRB reduce BV to BIL pathway.
BLVRA is classified as a druggable target (Enzyme category) with score 2.2.
Genetic testing for BLVRA is available. Testing is considered supportive for diagnosis.
Phenotype severity distribution: 2 always present features.
Estimated prevalence: <1 in 1,000,000 (VERY_RARE).
No clinical trials have been registered for hyperbiliverdinemia.
1 publication has been identified in PubMed for hyperbiliverdinemia. Research spans Review / Meta-Analysis (100%).
Mancuso C (2025). [PMID: 40002374](https://pubmed.ncbi.nlm.nih.gov/40002374/). *Antioxidants (Basel, Switzerland)*. [Review / Meta-Analysis]
Data assembled from 7 of 12 sources · Last updated Sep 19, 2026, 12:47 AM UTC
Online Mendelian Inheritance in Man
European rare disease database
Genetic and Rare Diseases Info Center
1 |
Elevated circulating biliverdin concentration |