Progressive Familial Intrahepatic Cholestasis (PFIC) is a group of rare, inherited liver disorders that present early in life and often lead to progressive liver disease, cirrhosis, and ultimately the need for liver transplantation. For paediatricians and physicians, early recognition and timely referral are critical to improving outcomes for affected children.
This blog aims to equip frontline healthcare providers with a practical understanding of PFIC — from pathophysiology and presentation to diagnosis and management.
What is PFIC?
PFIC refers to a family of autosomal recessive genetic disorders characterized by impaired bile formation or secretion at the level of hepatocytes or bile ducts, leading to cholestasis, intractable pruritus, growth failure, and liver fibrosis. There are several types (PFIC1–PFIC6), each linked to mutations affecting bile transport proteins.
| Type | Gene Mutation | Key Features |
| PFIC1 (Byler disease) | ATP8B1 | Diarrhoea, hearing loss, pancreatitis, normal-to-low GGT |
| PFIC2 | ABCB11 (BSEP deficiency) | Severe pruritus, risk of hepatocellular carcinoma (HCC), normal-to-low GGT |
| PFIC3 | ABCB4 (MDR3 deficiency) | Variable age of onset, high GGT cholestasis, gallstones, portal hypertension, fibrosis |
| PFIC4 | TJP2 mutation | Severe cholestasis, portal hypertension, high risk of early cirrhosis |
| PFIC5 | NR1H4 mutation (FXR deficiency) MYO5B mutation | Neonatal cholestasis, coagulopathy, high mortality without transplant Cholestasis often associated with microvillous inclusion disease (diarrhoea) |
Important: Types 1 and 2 typically present with normal or low GGT, whereas PFIC3 (and some others) show elevated GGT.
Clinical Presentation
- Persistent Jaundice — typically from the neonatal period or early infancy.
- Intractable Pruritus — often preceding visible jaundice; a hallmark symptom.
- Hepatomegaly and/or Splenomegaly.
- Poor Growth and Failure to Thrive.
- Fat-Soluble Vitamin Deficiencies — leading to rickets, coagulopathy.
- Diarrhoea (especially in PFIC1).
- Family History — may include affected siblings or consanguinity.
Investigations and Diagnosis
1. Blood Tests
- Liver enzymes (ALT, AST)
- GGT (key to differentiating PFIC types)
- Serum bile acids (markedly elevated)
- Coagulation profile (PT/INR, reflecting vitamin K status)
- Fat-soluble vitamin levels (A, D, E, K)
2. Imaging
- Abdominal Ultrasound: Often normal initially, may reveal hepatosplenomegaly later.
3. Liver Biopsy
- May show cholestasis, giant cell transformation, fibrosis, or biliary cirrhosis depending on stage and type.
4. Genetic Testing
- Essential for definitive diagnosis and subtype classification.
- Also important for family counselling and future reproductive planning.
5. Additional
- Hepatocellular carcinoma screening (especially in PFIC2 patients) from early childhood.
Management Principles
1. Symptom Control
- Pruritus Management: Ursodeoxycholic acid (UDCA), rifampicin, cholestyramine, naltrexone, or sertraline.
- Nutritional Support: High-calorie diet; supplementation with fat-soluble vitamins (ADEK).
- IBAT inhibitors – a major breakthrough in the management of PFIC: Target the bile acid transport pathway reducing the debilitating pruritus and cholestasis that define the disease — potentially delaying or even avoiding the need for liver transplantation in selected patients. While not a cure, they offer hope and improved quality of life for children living with this rare condition.
- Monitoring: Regular assessment of growth parameters and liver function.
2. Surgical Interventions
- Biliary Diversion: May reduce bile acid accumulation and improve pruritus and liver function.
3. Liver Transplantation
- Required in cases of liver failure, uncontrollable pruritus, or development of HCC.
- Post-transplant, some complications may persist depending on PFIC type (e.g., diarrhoea in PFIC1).
Prognosis
Without treatment, PFIC leads to progressive liver fibrosis and end-stage liver disease. However, early recognition, supportive management, surgical interventions, and timely liver transplantation can significantly improve quality of life and survival rates.
Key Takeaways for Paediatricians and Physicians
✅ Think PFIC in any child with prolonged jaundice, especially with low/normal GGT and intense itching.
✅ Early referral to a paediatric hepatologist or transplant centre improves outcomes.
✅ Genetic diagnosis is crucial for guiding management, prognosis, and family planning.
✅ Comprehensive care, including nutrition and psychological support, is essential for optimal long-term outcomes.
✅ Liver transplantation is life-saving but should be carefully timed and planned.
Conclusion
Progressive Familial Intrahepatic Cholestasis remains a challenging, yet manageable, group of disorders when detected early. As frontline healthcare providers, paediatricians and physicians play a critical role in recognizing the signs and initiating appropriate referral pathways.
Together, we can offer children affected by PFIC a brighter, healthier future.