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Protocol Details

Phase II Trial of Combination Immunotherapy in Subjects with Advanced Small Bowel and Colorectal Cancers

This study is NOT currently recruiting participants.

Summary | Eligibility | Citations | Contacts




Sponsoring Institute

National Cancer Institute (NCI)

Recruitment Detail

Type: No longer recruiting/follow-up only
Gender: Male & Female
Min Age: 18 Years
Max Age: 120 Years

Referral Letter Required


Population Exclusion(s)

Pregnant Women


CEA MUC1 Vaccine;
Bintrafusp alfa;

Recruitment Keyword(s)



Small Bowel Cancers;
Colorectal Cancers

Investigational Drug(s)


Investigational Device(s)



Biological/Vaccine: CV301
Drug: MSB0011359C
Drug: N-803
Drug: NHS-IL12

Supporting Site

National Cancer Institute


Metastatic or refractory/recurrent small bowel and colorectal cancers cannot be cured and are often not helped by standard treatments. Researchers want to find better treatments by testing a combination of drugs.


To learn if a new combination of immunotherapy drugs can shrink tumors in people with advanced small bowel and colorectal cancers.


People ages 18 and older who have advanced metastatic or refractory/recurrent small bowel and/or colorectal cancer.


Participants will be screened on a separate protocol. They will have a physical exam and medical history. They will have imaging scans. They will have blood and urine tests. Their heart function will be measured. They may have a tumor biopsy.

Participants will repeat some of the screening tests during the study.

Participants will be put into study groups. Each group will get a combination of the following drugs: CV301 vaccine (modified vaccinia Ankara (MVA)-BN-CV301 and Fowlpox (FPV)-CV301), M7824 (MSB0011359C), and N-803 (Anktiva). Some will also get NHS-IL12 (M9241).

Participants will get the CV301 vaccines by injection under the skin. They will get M7824 by intravenous infusion every 2 weeks. They will get N-803 by injection under the skin every 2 or 4 weeks. They may get NHS-IL12 by injection under the skin every 4 weeks. They will take the study drugs for up to 1 year. They will visit the National Institutes of Health (NIH) every 2 weeks.

After treatment ends, participants will go to the clinic for a 28-day follow-up visit or have a telephone call. They will be contacted every 3 months for 1 year, and then every 6 months after that for the rest of their life.

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1. Subjects with cytologically or histologically confirmed locally advanced or metastatic small bowel or colorectal adenocarcinoma

2. Subjects must have received two prior lines of systemic therapy unless the subject is not eligible to receive standard therapy or declines standard treatment

3. Subjects must have measurable disease

4. Eastern Cooperative Oncology Group (ECOG) performance status <= 2

5. Adequate hematologic function at screening, as follows:

- Absolute neutrophil count (ANC) >=1 x 10^9/L

- Hemoglobin >= 9 g/dL

- Platelets >= 75,000/microliter

6. Adequate renal and hepatic function at screening, as follows:

- Serum creatinine <= 1.5 x upper limit of normal (ULN) OR

Measured or calculated creatinine clearance >= 40 mL/min for participant with creatinine levels > 1.5 X institutional ULN (glomerular filtration rate (GFR) can also be used in place of creatinine or creatinine clearance (CrCl);

- Bilirubin <= 1.5 x ULN OR in subjects with Gilbert s syndrome, a total bilirubin <= 3.0 x ULN

- Alanine aminotransferase (ALT) and aspartate aminotransferase (AST) <= 2.5 x ULN, unless liver metastases are present, then values must be <= 3 x ULN)

7. The effects of the immunotherapies on the developing human fetus are unknown; thus, women of childbearing potential and men must agree to use highly effective contraception (hormonal or barrier method of birth control; abstinence) prior to study entry, for the duration of study treatment and up to two months after the last dose of study drug. Should a woman become pregnant or suspect she is pregnant while she or her partner is participating in this study, she should inform her treating physician immediately.

8. Participants serologically positive for human immunodeficiency virus (HIV), Hep B, Hep C are eligible as long as the viral loads are undetectable by quantitative polymerase chain reaction (PCR). HIV positive participants must have cluster of differentiation 4 (CD4) count >= 200 cells per cubic millimeter at enrollment, be on stable antiretroviral therapy for at least 4 weeks and have no reported opportunistic infections or Castleman s disease within 12 months prior to enrollment.

9. Ability of subject to understand and the willingness to sign a written informed consent document.


1. Participants with prior investigational drug, chemotherapy, immunotherapy or any prior radiotherapy (except for palliative bone directed therapy) within the past 28 days prior to the first drug administration except if the investigator has assessed that all residual treatment-related toxicities have resolved or are minimal and feel the participant is otherwise suitable for enrollment. Additionally, current therapies (e.g., maintenance capecitabine) may be continued where in the opinion of the investigator stopping such therapies may increase the risk of disease progression. Also, participants may continue adjuvant hormonal therapy in the setting of a definitively treated cancer (e.g., breast).

2. Participants with microsatellite unstable or mismatch repair deficient disease.

3. Major surgery within 28 days prior to the first drug administration (minimally invasive procedures such as diagnostic biopsies are permitted).

4. Known life-threatening side effects resulting from prior checkpoint inhibitor therapy (e.g., colitis, pneumonitis, fulminant hepatitis which led to permanent discontinuation of prior checkpoint therapy). Autoimmune toxicity which was not life threatening (e.g., arthritis) or did not lead to discontinuation of prior checkpoint therapy is allowed.

5. Known active brain or central nervous system metastasis (less than a month out from definitive radiotherapy or surgery), seizures requiring anticonvulsant treatment (<3 months) or clinically significant cerebrovascular accident (<3 months). In order to be eligible participants must have repeat central nervous system (CNS) imaging at least a month after definitive treatment showing stable CNS disease. Participants with evidence of intra-tumoral or peritumoral hemorrhage on baseline imaging are also excluded unless the hemorrhage is grade <= 1 and has been shown to be stable on two consecutive imaging scans.

6. Pregnant women are excluded from this study because these drugs have not been tested in pregnant women and there is potential for teratogenic or abortifacient effects. Because there is an unknown but potential risk for adverse events in nursing infants secondary to treatment of the mother with these immunotherapies, breastfeeding should be discontinued if the mother is treated on this protocol.

7. Active autoimmune disease that might deteriorate when receiving an immunostimulatory agent with exception of:

-Diabetes type I, eczema, vitiligo, alopecia, psoriasis, hypo- or hyperthyroid disease or other mild autoimmune disorders not requiring immunosuppressive treatment;

-Subjects requiring hormone replacement with corticosteroids are eligible if the steroids are administered only for the purpose of hormonal replacement and at doses <= 10 mg of prednisone or equivalent per day;

-Administration of steroids for other conditions through a route known to result in a minimal systemic exposure (topical, intranasal, intro-ocular, or inhalation) is acceptable;

-Subjects on systemic intravenous or oral corticosteroid therapy with the exception of physiologic doses of corticosteroids (<= the equivalent of prednisone 10 mg/day) or other immunosuppressive agents such as azathioprine or cyclosporin A are excluded on the basis of potential immune suppression. For these subjects these excluded treatments must be discontinued at least 1 weeks prior to enrollment for recent short course use (<= 14 days) or discontinued at least 4 weeks prior to enrollment for long term use (> 14 days). In addition, the use of corticosteroids as premedication for contrast-enhanced studies is allowed prior to enrollment and on study.

-Subjects with a history of serious intercurrent chronic or acute illness, such as cardiac or pulmonary disease, hepatic disease, bleeding diathesis or recent (within 3 months) clinically significant bleeding events or other illness considered by the Investigator as high risk for investigational drug treatment.

-Subjects unwilling to accept blood products as medically indicated.

-History of second malignancy within 3 years of enrollment except for the following: adequately treated localized skin cancer, cervical carcinoma in situ, superficial bladder cancer, or other localized malignancy which has been adequately treated or malignancy which does not require active systemic treatment (e.g., low risk chronic lymphocytic leukemia (CLL).

-Subjects with a known severe hypersensitivity reaction to a monoclonal antibody (grade >= 3 National Cancer Institute (NCI)-Common Terminology Criteria for Adverse Events (CTCAE v5) will be evaluated by the allergy/immunology team prior to enrollment.

-Receipt of any organ transplantation requiring ongoing immunosuppression.

-Receipt of prior lymphodepleting chemotherapy (e.g., cyclophosphamide or fludarabine at standard lymphodepleting doses).

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Not Provided

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Principal Investigator

Referral Contact

For more information:

Jason M. Redman, M.D.
National Cancer Institute (NCI)
(240) 858-3305

Elizabeth A. Lamping
National Cancer Institute (NCI)
National Institutes of Health
Building 10
Room 13N222
10 Center Drive
Bethesda, Maryland 20892
(240) 760-7966

NCI Referral Office
National Institute of Health Clinical Center (CC), 9000 Rockville Pike, Bethesda, Maryland 20892, United States: NCI Clinical Trials Referral Office

Clinical Trials Number:


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