Study to Compare the Effects of Repeated Doses of an Investigational New Drug and a Placebo on Appetite in Advanced Cancer and Anorexia
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ClinicalTrials.gov Identifier: NCT04803305 |
Recruitment Status :
Active, not recruiting
First Posted : March 17, 2021
Last Update Posted : May 26, 2022
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Condition or disease | Intervention/treatment | Phase |
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Non-small Cell Lung Cancer Pancreatic Cancer Colorectal Cancer Prostate Cancer Breast Cancer Ovarian Cancer Loss of Appetite Fatigue Cachexia Anorexia | Drug: PF-06946860 Drug: Placebo for PF-06946860 | Phase 1 |
A 6 week double blind study to compare the effects of the investigational new drug (PF-06946860) and a placebo on appetite and to find out how participants with advanced cancer and anorexia feel after receiving repeated doses injected under the skin (subcutaneously).
During the initial 6-week treatment period (Part A), a total of 2 doses of study drug or placebo will be administered 3 weeks apart. Each dose contains two injections. Part B is an optional 18-week open-label treatment period where up to 7 doses of study drug may be administered. Part B does not include placebo.
Assessments include:
- Measure the impact of the study drug on appetite, fatigue, and pain questionnaires
- Body weight measurements
- Blood samples to evaluate safety and additional endpoints including the amount of the study drug in the blood and the effects of the study drug on levels of a specific cytokine.
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 18 participants |
Allocation: | Randomized |
Intervention Model: | Sequential Assignment |
Masking: | Triple (Participant, Care Provider, Investigator) |
Masking Description: | Double-blind, sponsor open for 6-week double-blind treatment period followed by an optional 18-week open-label treatment period. |
Primary Purpose: | Treatment |
Official Title: | A 6-WEEK, RANDOMIZED, DOUBLE-BLIND, SPONSOR-OPEN STUDY TO ASSESS THE EFFECT OF REPEATED SUBCUTANEOUS ADMINISTRATION OF PF-06946860 ON APPETITE IN PARTICIPANTS WITH ADVANCED CANCER AND ANOREXIA, FOLLOWED BY AN 18-WEEK OPEN-LABEL TREATMENT PERIOD |
Actual Study Start Date : | May 11, 2021 |
Actual Primary Completion Date : | April 14, 2022 |
Estimated Study Completion Date : | September 22, 2022 |

Arm | Intervention/treatment |
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Experimental: Double-Blind PF-06946860 Treatment followed by Open Label PF-06946860 Treatment
subcutaneous injection
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Drug: PF-06946860
subcutaneous injection |
Placebo Comparator: Double-Blind Placebo Treatment followed by Open-Label PF-06946860 Treatment
subcutaneous injection
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Drug: PF-06946860
subcutaneous injection Drug: Placebo for PF-06946860 subcutaneous injection |
- effect of PF 06946860 compared to placebo on appetite [ Time Frame: Week 4 ]Change from baseline for patient reported 7-day recall Cancer Related Cachexia Symptom Assessment-Appetite score based on 11-point numerical rating scale.
- effect of PF 06946860 compared to placebo on appetite [ Time Frame: Weeks 1, 2, 3, 5 and 6 ]Change from baseline for patient reported 7-day recall Cancer Related Cachexia Symptom Assessment-Appetite score based on 11-point numerical rating scale.
- effect of PF 06946860 compared to placebo on fatigue [ Time Frame: Weeks 1, 2, 3, 4, 5 and 6. ]Change from baseline for patient reported 7-day recall Cancer Related Cachexia Symptom Assessment-Fatigue score based on 11-point numerical rating scale.
- Incidence of Treatment-Emergent Adverse Events [Safety and Tolerability] [ Time Frame: Week 6 ]Incidence of adverse events
- Incidence of laboratory abnormalities [Safety and Tolerability] [ Time Frame: Week 6 ]Incidence of laboratory abnormalities

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.
Ages Eligible for Study: | 18 Years and older (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Key Inclusion Criteria:
- Documented diagnosis of non-small cell lung, pancreatic, colorectal, prostate, breast or ovarian cancer which, in the treating oncologist's assessment, is considered advanced.
- Anorexia as defined by a score of ≤5 in the Cancer-Related Cachexia Symptom Assessment Appetite 7-day recall scale
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Meets any of the following criteria at Randomization:
- Not currently receiving antineoplastic therapy
- On standard of care systemic antineoplastic therapy or treatment without curative intent
- Signed informed consent.
Key Exclusion Criteria:
- Receiving tube feedings or parenteral nutrition at the time of Screening or Randomization.
- Current active reversible causes of decreased food intake.
- Current, severe gastrointestinal disease
- Participants with known symptomatic brain metastases requiring steroids.
- Active uncontrolled bacterial, fungal, or viral infection, including HBV, HCV, HIV or participants with known AIDS-related illness
- inadequate renal or liver function.
- Women who are pregnant or breast-feeding

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT04803305

Study Director: | Pfizer CT.gov Call Center | Pfizer |
Responsible Party: | Pfizer |
ClinicalTrials.gov Identifier: | NCT04803305 |
Other Study ID Numbers: |
C3651010 |
First Posted: | March 17, 2021 Key Record Dates |
Last Update Posted: | May 26, 2022 |
Last Verified: | May 2022 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | No |
Plan Description: | Pfizer will provide access to individual de-identified participant data and related study documents (e.g. protocol, Statistical Analysis Plan (SAP), Clinical Study Report (CSR)) upon request from qualified researchers, and subject to certain criteria, conditions, and exceptions. Further details on Pfizer's data sharing criteria and process for requesting access can be found at: https://www.pfizer.com/science/clinical_trials/trial_data_and_results/data_requests. |
Studies a U.S. FDA-regulated Drug Product: | Yes |
Studies a U.S. FDA-regulated Device Product: | No |
cancer, anorexia, cachexia, weight loss, loss of appetite, fatigue |
Wasting Syndrome Fatigue Anorexia Cachexia Signs and Symptoms, Digestive Emaciation |
Weight Loss Body Weight Changes Body Weight Metabolic Diseases Nutrition Disorders |