for people ages 18 years and up (full criteria)
at UC Davis UC Irvine UCLA
study started
estimated completion
Farshid Dayyani(uci)Edward Kim(ucdavis)Randy Hecht(ucla)



The study is being conducted to assess the safety and tolerability of (1) PEGPH20 in combination with CIS and GEM (PEGCISGEM), and (2) PEGPH20 in combination with CIS, GEM, and atezolizumab (PEGCISGEMATEZO) compared with (3) cisplatin and gemcitabine (CISGEM).

Official Title

A Phase 1b, Randomized, Open-Label Study of PEGylated Recombinant Human Hyaluronidase (PEGPH20) in Combination With Cisplatin Plus Gemcitabine and PEGPH20 in Combination With Atezolizumab and Cisplatin Plus Gemcitabine Compared With Cisplatin Plus Gemcitabine in Subjects With Previously Untreated, Unresectable, Locally Advanced, or Metastatic Intrahepatic and Extrahepatic Cholangiocarcinoma and Gallbladder Adenocarcinoma


The study will have a Run-in portion and an Expansion portion. The Run-in portion will be used to evaluate the safety profile of the PEGCISGEM and PEGCISGEMATEZO treatments prior to evaluating the efficacy and safety of PEGCISGEM and PEGCISGEMATEZO treatments compared with CISGEM treatment in the Expansion portion of the study. Treatment in both portions of the study will continue until death, withdrawal of consent from the study, disease progression, or unacceptable toxicity.


Cholangiocarcinoma Non-resectable Cholangiocarcinoma, Intrahepatic Cholangiocarcinoma, Extrahepatic Gallbladder Adenocarcinoma Extrahepatic Cholangiocarcinoma Intrahepatic Cholangiocarcinoma PEGylated Recombinant Human Hyaluronidase PEGylated Recombinant Human Hyaluronidase with atezolizumab Adenocarcinoma Cholangiocarcinoma Gemcitabine Cisplatin Atezolizumab Antibodies, Monoclonal PEGPH20 CIS GEM


You can join if…

Open to people ages 18 years and up

For both portions of the study, participants must satisfy all of the following inclusion criteria to be enrolled in the study:

  • Written Institutional Review Board/Ethics Committee-approved informed consent form (ICF), signed by participant or legally authorized representative.
  • Participants must be determined to have histologically confirmed unresectable, locally advanced or metastatic adenocarcinoma of the intra- and/or extra-hepatic bile ducts and/or gallbladder. Participants must have sufficient tissue with architectural integrity, including tumor and associated stroma, available for retrospective biomarker testing.
  • One or more lesions measurable on computed tomography (CT) scan/magnetic resonance imaging (MRI) scan per Response Evaluation Criteria in Solid Tumors (RECIST) version 1.1 (v1.1).
  • Participants having Eastern Cooperative Oncology Group (ECOG) Performance Status of 0 to 1.
  • Life expectancy ≥3 months.
  • Males and females aged ≥18 years.
  • Screening clinical laboratory values within pre-determined parameters
  • Female participants of childbearing potential (WOCBP) must have a negative urine or serum pregnancy test within 7 days before Day 1 (first dose of study medication).
  • For WOCBP and for men, agreement to use a highly effective contraceptive method from the time of screening throughout the study until 5 months (WOCBP) or 6 months (men) after administration of the last dose of any study medication. Highly effective contraceptive methods consist of prior sterilization, intrauterine device (IUD), intrauterine hormone releasing system (IUS), oral or injectable contraceptives, barrier methods, and/or true sexual abstinence.

You CAN'T join if...

Participants are ineligible for enrollment if they meet any of the following exclusion criteria:

  • Clinical evidence of deep vein thrombosis or pulmonary embolism present during the screening period
  • New York Heart Association Class III or IV cardiac disease, atrial fibrillation, unstable angina, or myocardial infarction within the past 12 months before screening.
  • Participants with known brain metastases
  • History of cerebrovascular accident or transient ischemic attack
  • History of active bleeding within the last 3 months prior to screening requiring transfusion.
  • Participants must have received no previous radiotherapy, surgery, chemotherapy or investigational therapy for treatment of metastatic or locally advanced disease.
  • Intolerance to non-steroidal anti-inflammatory drugs (NSAIDs).
  • Active hepatitis B virus (HBV) infection, defined as having a positive hepatitis B surface antigen (HBsAg) test at screening
  • Active hepatitis C virus (HCV) infection, defined as having a positive HCV antibody test at screening
  • History of:
  • Idiopathic pulmonary fibrosis, organizing pneumonia (e.g., bronchiolitis obliterans), drug-induced pneumonitis, or idiopathic pneumonitis, or evidence of active pneumonitis on screening chest CT scan. History of radiation pneumonitis in the radiation field (fibrosis) is permitted.
  • Or known cases of hepatobiliary diseases (e.g., primary biliary cholangitis, primary sclerosing cholangitis, history of immune-mediated cholangitis);

Participants with cholangitis attributed to infectious etiology (e.g., ascending cholangitis, bacterial cholangitis) are eligible if the infection has been fully resolved prior to the screening visit.

  1. Or known cases of drug-induced hepatobiliary toxicities.
  2. Active or history of autoimmune diseases
  3. Uncontrolled hypercalcemia


  • University of California Irvine Division of Hematology-Oncology, Department of Medicine UC Irvine Health accepting new patients
    Orange California 92868 United States
  • UC Davis accepting new patients
    Sacramento California 95817 United States
  • UCLA - David Geffen School of Medicine accepting new patients
    Santa Monica California 90404 United States
  • Scripps accepting new patients
    La Jolla California 92037 United States

Lead Scientists

  • Farshid Dayyani (uci)
    Associate Clinical Professor, Medicine. Authored (or co-authored) 41 research publications
  • Edward Kim (ucdavis)
    Associate Professor, Hematology and Oncology. Authored (or co-authored) 24 research publications
  • Randy Hecht (ucla)


accepting new patients
Start Date
Completion Date
Halozyme Therapeutics
Phase 1
Study Type
Last Updated