Open Accessibility Menu

Coronavirus (COVID-19) Vaccine Update Click here to learn more.

For information about COVID-19 or to view additional resources, please click here.

Gastroenterology & Liver Diseases

Washington DC Gastroenterology Services

The Division of Gastroenterology at The GW Medical Faculty Associates provides leading edge care, diagnoses, and treatments to patients suffering from disorders of the digestive system, liver, and pancreas.

Our providers are among the most highly trained in the nation offering both outpatient and inpatient services in the management of gastrointestinal hepatic, and nutritional disorders.

Conveniently Located

Clinical Trials

  • Primary objective:
    To evaluate the overall survival of fruquintinib plus BSC compared to placebo plus BSC in subjects with refractory mCRC.

    Inclusion Criteria:

    1. Provide written informed consent;
    2. Age >=18 years;
    3. Histologically and/or cytologically documented metastatic colorectal adenocarcinoma. RAS, BRAF, and microsatellite instability microsatellite instability (MSI)/mismatch repair (MMR) status for each patient must be documented, according to country level guidelines;
    4. Subjects must have progressed on or been intolerant to treatment with either trifluridine/tipiracil (TAS-102) or regorafenib. Subjects are considered intolerant to TAS-102 or regorafenib if they have received at least 1 dose of either agents and were discontinued from therapy for reasons other than disease progression. Subjects who have been treated with both TAS-102 and regorafenib are permitted. Subjects must also have been previously treated with standard approved therapies: fluoropyrimidine-, oxaliplatin-, and irinotecan-based chemotherapy, an anti-VEGF biological therapy, and, if RAS wild-type, an anti-EGFR therapy;
    5. Subjects with microsatellite-high (MSI-H) or mismatch repair deficient (dMMR) tumors must have been treated with immune checkpoint inhibitors if approved and available in the subject's country unless the patient is ineligible for treatment with a checkpoint inhibitor;
    6. Subjects who received oxaliplatin in the adjuvant setting and developed metastatic disease during or within 6 months of completing adjuvant therapy are considered eligible without receiving oxaliplatin in the metastatic setting. Subjects who developed metastatic disease more than 6 months after completion of oxaliplatin-containing adjuvant treatment must be treated with oxaliplatin-based therapy in the metastatic setting to be eligible;
    7. Body weight >=40kg;
    8. Eastern Cooperative Oncology Group (ECOG) performance status of 0-1;
    9. Have measurable disease according to RECIST Version 1.1, assessed locally. Tumors that were treated with radiotherapy are not measurable per RECIST Version 1.1, unless there has been documented progression of those lesions;
    10. Expected survival >12 weeks.
    11. For female subjects of childbearing potential and male subjects with partners of childbearing potential, agreement to use a highly effective form(s) of contraception, that results in a low failure rate (<1% per year) when used consistently and correctly, starting during the screening period, continuing throughout the entire study period, and for 90 days after taking the last dose of study drug. Such methods include: oral hormonal contraception (combined estrogen/ progestogen, or progestogen-only) associated with inhibition of ovulation, intrauterine device (IUD), intrauterine hormone-releasing system (IUS), bilateral tubal ligation, vasectomized partner, or true sexual abstinence in line with the preferred and usual lifestyle of the subject. Highly effective contraception should always be combined with an additional barrier method (eg, diaphragm, with spermicide). The same criteria are applicable to male subjects involved in this clinical trial if they have a partner of childbirth potential, and male subjects must always use a condom.
    12. Subjects with BRAF-mutant tumors must have been treated with a BRAF inhibitor if approved and available in the subject's home country unless the patient is ineligible for treatment with a BRAF inhibitor.
  • Primary outcome measurements:
    Overall survival (OS) [Time Frame: Up to 2 years post treatment]

    Secondary outcome measurements:
    Instrumental Activities of Daily Living (IADL) [Time Frame: Up to 2 years post treatment]

    Inclusion Criteria:

    1. Newly diagnosed untreated metastatic adenocarcinoma of the pancreas. However, previous surgery, adjuvant chemotherapy and/or radiation therapy will be allowed, provided radiation therapy is completed at least 2 weeks prior to registration and adjuvant therapy was administered more than 6 months prior to registration. Patients with the following histology are excluded: acinar cell; adenosquamous carcinoma
    2. Eastern Cooperative Oncology Group (ECOG) performance status 0-2
    3. Patient is an English speaker with the ability to understand and complete the informed consent and questionnaires
    4. Leukocytes >= 3,000/mcL (obtained within 4 weeks of registration)
    5. Absolute neutrophil count >= 1,500/mcL (obtained within 4 weeks of registration)
    6. Platelets >= 100,000/mcL (obtained within 4 weeks of registration)
    7. Total bilirubin =< institutional upper limit of normal (ULN) (obtained within 4 weeks of registration)
    8. Aspartate aminotransferase (AST) (serum glutamic oxaloacetic transaminase [SGOT])/alanine aminotransferase (ALT) (serum glutamate pyruvate transaminase [SGPT]) =< 2.5 x institutional ULN (obtained within 4 weeks of registration)
    9. Creatinine =< institutional ULN unless data exists supporting safe use at lower kidney function values, no lower than 30 mL/min/1.73 m^2 (obtained within 4 weeks of registration)
    10. Glomerular filtration rate (GFR) >= 40 mL/min/1.73 m^2 unless data exists supporting safe use at lower kidney function values, no lower than 30 mL/min/1.73 m^2 (obtained within 4 weeks of registration)
    11. Human immunodeficiency virus (HIV)-infected patients on effective anti-retroviral therapy with undetectable viral load within 6 months of registration are eligible for this protocol. HIV positive (+) patients who are on ritonavir or/and cobicistat-based regimen must be switched to alternative anti-retroviral therapy (ART)
    12. For patients with evidence of chronic hepatitis B virus (HBV) infection, the HBV viral load must be undetectable on suppressive therapy, if indicated
    13. Patients with a history of hepatitis C virus (HCV) infection must have been treated and cured. For patients with HCV infection who are currently on treatment, they are eligible if they have an undetectable HCV viral load
    14. Male patients must agree not to father children while on study
    15. Patients with known history or current symptoms of cardiac disease, or history of treatment with cardiotoxic agents, should have a clinical risk assessment of cardiac function using the New York Heart Association functional classification. To be eligible for this protocol, patients should be class 2B or better
    16. Patients must have measurable disease and scans must be done within 4 weeks of registration
    17. Patients classified to have mild-moderate abnormalities in any of the domains evaluated in the screening geriatric assessment and are classified as "vulnerable" are eligible. Patients classified without any abnormalities ("fit") or with severe cognitive/functional impairment or high co-morbidity score ("frail") on the screening geriatric assessment are ineligible
    18. Patients must agree not to take any medications or substances that are strong inhibitors or inducers of CYP3A4. Those who are randomized to liposomal irinotecan treatment arm should avoid drugs that are UGT1A1 inhibitors
  • Primary objective:
    To evaluate whether therapy with nivolumab following combined modality therapy (CMT) improves disease-free survival (DFS) compared with observation in patients with high risk anal carcinoma.

    Secondary objectives:

    • 1a. To compare nivolumab following combined modality therapy (CMT) with observation in patients with high risk anal carcinoma with regard to:
    • 1b. Objective response rate (complete [CR] and partial [PR]), stable disease and progression.
    • 1c. Severe toxicity interval.
    • 1d. Colostomy-free survival.
    • 1e. Overall survival.
    • 1f. Toxicity.

    Inclusion Criteria:

    1. Patients must have histologically proven stage IIB (T3N0M0 only), IIIA (T2N1M0), IIIB (T4N0M0), or IIIC (T3N1M0, T4N1M0) invasive squamous cell carcinoma of the anus or anorectum, according to the American Joint Committee on Cancer (AJCC) 8th edition; this may include tumors of non-keratinizing histology such as basaloid, transitional cell, or cloacogenic histology; individuals with squamous cell carcinoma of the anal margin are eligible if there is evidence of extension of the primary tumor into the anal canal
    2. Patients must have Eastern Cooperative Oncology Group (ECOG) performance status of 0-2
    3. Patients must have hemoglobin levels of > 9 g/dL (within 2 weeks prior to registration)
    4. Patient must have a platelet count of > 100,000/mm^3 (within 2 weeks prior to registration)
    5. Patient's absolute neutrophil count (ANC) level must be > 1500/mm^3 (within 2 weeks prior to registration)
    6. Serum creatinine must be =< 1.5 X upper limit of normal (ULN) (within 2 weeks prior to registration)
    7. Total bilirubin must be < 2 X ULN (within 2 weeks prior to registration)
    8. Aspartate aminotransferase (AST) (serum glutamic oxaloacetic transaminase [SGOT])/alanine aminotransferase (ALT) (serum glutamic pyruvic transaminase [SGPT]) =< 2.5 X institutional upper limit of normal (within 2 weeks prior to registration)
    9. Albumin >= 3.0 g/dL (within 2 weeks prior to registration)
    10. Patients known to be human immunodeficiency virus (HIV)+ are permitted; patients with CD4 > 200 and serum HIV viral load of < 200 copies/mm^3 are eligible, and SEE PROTOCOL FOR ADDITIONAL TESTING REQUIREMENTS FOR HIV+ SUBJECTS.

      NOTE: HIV testing is not required for eligibility
    11. For patients registering prior to start of chemoradiotherapy, baseline scans must have been completed within 4 weeks prior to registration
    12. Women of child bearing potential and sexually active males must use accepted and effective method(s) of contraception and/or abstain from sexual intercourse while on protocol treatment and for at least 5 months after the last dose of nivolumab (for female patients) and for at least 7 months after the last dose of nivolumab (for male patients)
    13. Any surgery must have been completed >= 4 weeks prior to starting study treatment
    14. No uncontrolled intercurrent illness including, but not limited to ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements
    15. No prior treatment with an immune checkpoint inhibitor (anti-PD-1, anti-PD-L1, anti-PD-L2, anti-CTLA4 monoclonal antibody)
    16. No patients with immunodeficiency or receiving systemic steroid therapy equivalent to > 10 mg prednisone per day or any other form of immunosuppressive therapy within 7 days prior to Step 1 registration; topical corticosteroid or occasional inhaled corticosteroids are allowed
    17. No live vaccines within 30 days prior to registration; examples of live vaccines include, but are not limited to, the following: measles, mumps, rubella, chicken pox, yellow fever, rabies, BCG, and typhoid (oral) vaccine; seasonal influenza vaccines for injection are generally killed virus vaccines and are allowed; however, intranasal influenza vaccines (e.g., Flu-Mist) are live attenuated vaccines and are not allowed

      NOTE: no live vaccines may be administered while participating in the trial
    18. Previously irradiated patients (Arm S) must have received radiation per National Comprehensive Cancer Network guidelines; radiation therapy delivered on protocol (Arm T) will be reviewed