AI Summary Progressive familial intrahepatic cholestasis (PFIC) is a group of rare inherited liver disorders that start in childhood. Changes in the ATP8B1, ABCB11, or ABCB4 gene disrupt bile flow, so bile builds up and damages the liver. Severe itching and jaundice can occur. Blood tests, imaging, and genetic testing confirm the type. IBAT inhibitor medicines ease itching, and nutrition, vitamins, and lifelong specialist follow-up support care.

Progressive Familial Intrahepatic CholestasisA group of rare inherited liver disorders that start in childhood

Medically reviewed.

Progressive familial intrahepatic cholestasis (PFIC) is a group of rare inherited liver disorders that start in childhood. Gene changes disrupt how bile is made, moved, or released, so bile builds up and damages the liver.

Severe itching (pruritus) is a key symptom that treatment targets. There are three main types, named for the gene involved. Genetic testing is the foundation of a definitive diagnosis, and care usually involves a team of experts at a specialty center.

Medicines called ileal bile acid transporter (IBAT) inhibitors lower bile acid levels and help relieve itching. PFIC needs lifelong follow-up with a liver specialist.

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About PFIC

What Is PFIC?

Progressive familial intrahepatic cholestasis (PFIC) is a group of rare inherited disorders that start in childhood. Gene changes disrupt how the liver makes, moves, or releases bile, the fluid that helps digest fat. Bile then builds up and damages the liver. Doctors use the word cholestasis for this problem with bile flow.

PFIC is divided into three main types based on the gene involved and on the level of GGT (gamma-glutamyl transferase), a liver enzyme measured in a blood test. The type shapes which problems outside the liver may appear and how high the risk of liver cancer is.

Because PFIC is complex, care usually takes place at specialty referral centers, where a team of experts works together. People with PFIC need lifelong, regular follow-up to watch for disease progression and complications.

Treatment can lower bile acid levels and ease severe itching. Good nutrition, vitamin support, and regular visits with a liver specialist are part of care.

How PFIC may feel

Symptoms of PFIC

PFIC starts in childhood. Symptoms come from bile that cannot drain properly, so they can affect the skin, digestion, nutrition, and bones.

Itching and Bile Flow Symptoms

Severe itching (pruritus), the symptom treatment focuses on most
Itching that can get worse with overheating
Yellowing of the skin and the whites of the eyes (jaundice), a sign of poor bile drainage

Nutrition, Growth, and Bone Symptoms

Trouble absorbing fats and nutrients (malabsorption)
Low levels of the fat-soluble vitamins A, D, E, and K
Bone complications over time
Growth that needs close tracking in children

Complications and Signs of More Advanced Disease (Seek Medical Attention)

Diarrhea or pancreatitis (inflammation of the pancreas), which can occur in type 1
Portal hypertension, or high pressure in the veins that carry blood through the liver
Liver cancer (hepatocellular carcinoma), a high risk in type 2

Getting checked

Tests Overview

Diagnosis starts with confirming cholestasis and ruling out more common causes. Genetic testing is then recommended as the foundation of a definitive diagnosis. No single test tells the whole story.

Clinical History and Physical Exam: Your care team reviews symptoms and family history, and looks for signs outside the liver that may point to a specific genetic syndrome.
Blood Tests for Bile Flow and Liver Function: Tests such as bilirubin, alkaline phosphatase (ALP), and GGT help show whether bile flow is impaired. GGT is especially useful: it is low in PFIC types 1 and 2 and markedly high in type 3.
Imaging: Ultrasound and specialized bile duct imaging help tell blocked bile ducts, such as biliary atresia, apart from inherited conditions inside the liver.
Genetic Testing: Looks for changes in genes such as ATP8B1, ABCB11, and ABCB4 to confirm the PFIC type. It also informs the outlook, guides treatment, and helps decide whether early referral for liver transplantation is needed.
Ongoing Monitoring: Regular checks of growth, nutrition, fat-soluble vitamin levels, and bone density, plus follow-up for portal hypertension and liver cancer, continue for life.

Key Fact About PFIC Testing:

Doctors combine blood tests, imaging, and genetic testing. Once cholestasis is confirmed and other common causes are ruled out, genetic testing gives the definitive diagnosis.

Learn more about liver tests

Care & management

Treatment Overview

Treatment for PFIC aims to lower bile acid levels in the body and relieve severe itching. Because PFIC is a lifelong condition, care continues with regular follow-up with a liver specialist.

IBAT Inhibitor Medicines

Two prescription medicines, odevixibat (Bylvay) and maralixibat (Livmarli), are ileal bile acid transporter (IBAT) inhibitors. They reduce how much bile acid the intestine reabsorbs. More bile acid leaves in the stool, circulating bile acid levels drop, and severe itching eases. They are oral medicines, and treatment is usually continued for as long as it helps and is well tolerated. Common side effects of Bylvay include diarrhea, abdominal pain, vomiting, low fat-soluble vitamin levels, and raised liver enzymes.

Learn more about PFIC treatments

Nutrition, Vitamins, and Skin Care

Medicine works alongside supportive care. Your team will help you keep up good nutrition, take fat-soluble vitamins (A, D, E, and K) as directed, and follow growth in children. Skin care and avoiding overheating can ease itching. Regular blood tests check liver function and vitamin levels.

Monitoring and When a Transplant Is Considered

People with PFIC need lifelong follow-up for disease progression, portal hypertension, and liver cancer risk. Genetic testing helps your team decide whether early referral for liver transplantation is needed. A specialist center can explain which options fit your child's PFIC type.

Key Fact About PFIC Treatment:

IBAT inhibitors offer an oral, non-surgical option that lowers bile acid levels and helps relieve severe itching. Treatment is long-term and works best with good nutrition and regular specialist follow-up.

Causes & Risk Factors

PFIC is caused by inherited gene changes that disrupt the normal making, transport, or release of bile. It is not caused by diet or anything a parent did.

Genetic Cause

Type 1: changes in the ATP8B1 gene
Type 2: changes in the ABCB11 gene, which cause BSEP deficiency
Type 3: changes in the ABCB4 gene, which cause MDR3 deficiency
Disrupted bile flow lets bile build up and damage the liver

Risk Factors

Having a family member diagnosed with PFIC, since the condition is inherited
Type 2 PFIC carries a high risk of developing liver cancer
Type 1 PFIC can also involve diarrhea and pancreatitis

Key Facts Overview:

PFIC is a group of rare inherited disorders that start in childhood. Genetic testing identifies the type, which helps predict complications and guide care.

When to get checked

When Should You See a Doctor?

PFIC starts in childhood and needs specialist care. Knowing when to seek evaluation can lead to earlier diagnosis and better planning for long-term care.

Clear, Actionable Triggers for Medical Evaluation

Talk with a healthcare provider if your child has severe or persistent itching, yellowing of the skin or eyes, trouble gaining weight or growing, or diarrhea or pancreatitis along with liver problems. Also ask for an evaluation if routine blood tests show signs of cholestasis or if a family member has been diagnosed with PFIC.

Why Early Evaluation Matters

Other conditions, including blocked bile ducts, can look similar in young children. Prompt imaging and testing help tell them apart. A definitive diagnosis also guides treatment and shows which complications to watch for.

Getting the Right Specialist Care

Management of genetic cholestatic liver disease typically takes place at specialty referral centers that offer multidisciplinary expertise. A pediatric liver specialist (hepatologist) usually leads care, with support from nutrition and other specialists as needed.

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Eating & liver health

Liver-Healthy Diet Overview

Diet supports PFIC treatment but does not replace it. Poor bile flow makes it harder to absorb fats and the vitamins that dissolve in fat, so good nutrition is a core part of care.

Your care team will track growth, nutrition, and vitamin levels with regular tests. Patients are advised to keep up adequate nutrition and take fat-soluble vitamins as directed.

Ask your care team about a food plan that fits your child's PFIC type, age, and treatment. Do not start supplements on your own.

Everyday Steps That Support PFIC Care

Enough calories and nutrients to support growth
Fat-soluble vitamins A, D, E, and K, as directed by your care team
Avoiding overheating, which can worsen itching
Gentle skin care to ease itching
Avoiding substances that can harm the liver, including alcohol in older patients

Common questions

Answers to Common Progressive Familial Intrahepatic Cholestasis Questions

What is progressive familial intrahepatic cholestasis?

PFIC is a group of rare inherited liver disorders that start in childhood. Gene changes disrupt how bile is made, moved, or released. Bile is the fluid that helps your body digest fat. When it cannot flow normally, it builds up in the liver and damages it over time. Doctors call this problem cholestasis. The word "progressive" means the liver damage can worsen without proper care. There are three main types, based on the gene involved. Severe itching is a key symptom, and treatment aims to lower bile acid levels and relieve it.

What are the types of PFIC?

There are three main types. Type 1 involves the ATP8B1 gene, a low GGT level, and problems outside the liver, such as diarrhea and pancreatitis. Type 2 involves the ABCB11 gene, which causes BSEP deficiency. It also has a low GGT level and carries a high risk of liver cancer. Type 3 involves the ABCB4 gene, which causes MDR3 deficiency. It is marked by a very high GGT level. Genetic testing confirms the type. Knowing the type helps your team predict complications and plan care.

What symptoms does PFIC cause?

Severe itching (pruritus) is a key symptom that treatment targets. Poor bile drainage can also cause jaundice, which is yellowing of the skin and eyes. Because bile helps absorb fat, children may have trouble absorbing nutrients and low levels of vitamins A, D, E, and K. Over time, this can affect growth and bones. Some types add other problems. Type 1 can cause diarrhea and pancreatitis, and type 2 carries a high risk of liver cancer. Symptoms vary, so your care team will explain what to watch for.

How is PFIC diagnosed?

Doctors combine several steps, and genetic testing gives the definitive diagnosis. First, they review symptoms and family history, examine your child, and run blood tests to confirm cholestasis. The GGT level helps point toward a type. Ultrasound and specialized bile duct imaging help rule out blocked bile ducts, such as biliary atresia. Once cholestasis is confirmed and other common causes are excluded, genetic testing looks for changes in genes such as ATP8B1, ABCB11, and ABCB4. This usually happens at a specialty referral center.

Is there a treatment for PFIC?

Yes. Two prescription medicines, odevixibat (Bylvay) and maralixibat (Livmarli), treat the severe itching that PFIC causes. Both are ileal bile acid transporter (IBAT) inhibitors. They reduce how much bile acid the intestine takes back in. More bile acid leaves in the stool, so bile acid levels in the body drop and itching eases. They are taken by mouth as long-term therapy, and your team monitors liver tests, vitamin levels, and growth. Common side effects include diarrhea, abdominal pain, and vomiting. Your doctor decides whether a medicine fits your child's care plan.

Medical disclaimer: LiverDirectory provides educational information and a directory of providers. It does not provide medical advice, diagnosis, or treatment. Always consult a licensed physician regarding any medical condition.