A Phase 2 interventional study of Volixibat and Placebo in Primary Sclerosing Cholangitis, sponsored by Mirum Pharmaceuticals, Inc.. Active, not recruiting at 103 sites in 14 countries. Open to participants aged 12 Years and older. Per ClinicalTrials.gov, last updated 2026-10-19.
Sponsored by Mirum Pharmaceuticals, Inc. · Phase 2, Interventional, and Treatment
The purpose of this clinical research study is to learn more about the use of the study medicine, volixibat, for the treatment of pruritus (itching) associated with Primary Sclerosing Cholangitis (PSC), and to assess the possible impact on the disease progression of PSC.
149 studies on the registry are indexed under Cholangitis, Sclerosing; 39 are open to participants now.
This study's enrollment of 182 is above the median of 34 across 94 interventional studies indexed under Cholangitis, Sclerosing.
Browse Cholangitis, Sclerosing studies →Mirum Pharmaceuticals, Inc. is the lead sponsor of 40 studies on the registry; 7 are open to participants now.
Of its 12 completed or terminated interventional studies of FDA-regulated products, 11 (92%) have results posted.
Counted across the registry records on this site, refreshed daily.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.
Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.
GFR (glomerular filtration rate) is how much blood the kidneys filter each minute. It is usually estimated from a blood test — eGFR, by formulas such as CKD-EPI or MDRD — and some studies ask for it to be measured directly instead. Usually given in mL/min/1.73 m².
Check the method, the units and the minimum the study states. A value of 90 or above is in the normal-or-high range, but kidney damage can show in other tests too.
Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.
Blood tests of how long blood takes to clot. The INR is the prothrombin time (PT) put on a common scale; about 1 is usual for someone not taking a blood thinner.
Criteria often make an exception for people on a blood thinner such as warfarin, whose INR is raised on purpose.
A yellow substance made when red blood cells are broken down, which the liver clears. A high level can mean a problem with the liver or the bile ducts.
Criteria often allow more for people with Gilbert’s syndrome, a harmless inherited condition that raises bilirubin.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
ALT and AST (liver enzymes)
Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.
Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
GFR and eGFR (kidney filtering)
GFR (glomerular filtration rate) is how much blood the kidneys filter each minute. It is usually estimated from a blood test — eGFR, by formulas such as CKD-EPI or MDRD — and some studies ask for it to be measured directly instead. Usually given in mL/min/1.73 m².
Check the method, the units and the minimum the study states. A value of 90 or above is in the normal-or-high range, but kidney damage can show in other tests too.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Platelets
Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
INR, PT and aPTT (clotting tests)
Blood tests of how long blood takes to clot. The INR is the prothrombin time (PT) put on a common scale; about 1 is usual for someone not taking a blood thinner.
Criteria often make an exception for people on a blood thinner such as warfarin, whose INR is raised on purpose.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Bilirubin
A yellow substance made when red blood cells are broken down, which the liver clears. A high level can mean a problem with the liver or the bile ducts.
Criteria often allow more for people with Gilbert’s syndrome, a harmless inherited condition that raises bilirubin.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Participants randomized to this arm will receive volixibat 20mg twice daily.
Drug: Volixibat
Participants randomized to this arm will receive volixibat 80mg twice daily.
Drug: Volixibat
Participants in this arm will receive capsules matched to the study drug minus the active volixibat substance, twice daily.
Drug: Placebo
Participants randomized to this arm will receive volixibat 20mg twice daily.
Drug: Volixibat
Participants in this arm will receive capsules matched to the study drug minus the active volixibat substance, twice daily.
Drug: Placebo
Oral capsules, administered twice daily. Volixibat is an Ileal Bile Acid Transporter (IBAT) inhibitor.
Also known as: SHP626
Capsules matched to study drug minus active substance
Mean change in the daily itch scores using the Adult Itch Reported Outcome (Adult ItchRO) questionnaire
The Adult ItchRO is an 11-point NRS measurement of itch severity ranging from 0=no itch to 10=worst possible itch.
Time frame: Baseline through to Week 28
Proportion of participants with itch response using the Adult ItchRO
Time frame: Baseline through to Week 28
The incidence of adverse events
Time frame: Baseline through to Week 28
Changes in serum bile acid levels
Time frame: Baseline through to Week 28
Changes in alkaline phosphatase
Time frame: Baseline through to Week 28
Changes in total bilirubin levels
Time frame: Baseline through to Week 28
Change in Primary Sclerosing Cholangitis-Specific Patient-Reported Outcome
Time frame: Baseline through to Week 28
Change in Patient-Reported Outcomes Measurement Information System (PROMIS®) fatigue questionnaire
The PROMIS® Fatigue questionnaire is a 5-point response scale. Respondents endorse each item using a 5-point response scale: Never, Rarely, Sometimes, Often, and Always.
Time frame: Baseline through to Week 28
Change in Patient-Reported Outcomes Measurement Information System (PROMIS®) sleep disturbance questionnaire
The PROMIS® Sleep Disturbance in an 8-item measure that assesses quality of sleep, sleep depth, and restoration associated with sleep. It is a 5-point response scale, the specific response options vary by items. The first 4 items use response options that range from Not at all to Very much. The next 3 items use response options that range from Never to Always. The final item assesses sleep quality ranging from Very poor to Very good.
Time frame: Baseline through to Week 28
Showing the first 100 of 103 sites across 14 countries. Choose a country and city above to see the rest.
Ran from Dec 2020 to primary completion in Feb 2026, 62 months.
Of 23 phase 2 interventional studies under Cholangitis, Sclerosing, half reached primary completion within 37 months of starting (the median), counting those still running; a quarter within 21 and three quarters within 62. This study's 62 months is above that.
How these figures are worked out, and which studies are left out of them.
From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗
This study is active, not recruiting, as verified in Oct 2026. You cannot join it, but the record below documents what was studied.
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Studies of the drug tested here: Volixibat