Study To Evaluate The Efficacy And Safety Of Oral PF-06651600 And PF-06700841 In Subjects With Moderate To Severe Crohn's Disease
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ClinicalTrials.gov Identifier: NCT03395184 |
Recruitment Status :
Active, not recruiting
First Posted : January 10, 2018
Last Update Posted : September 23, 2022
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Condition or disease | Intervention/treatment | Phase |
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Crohn's Disease | Drug: PF-06651600 Placebo Drug: PF-06651600 Drug: Placebo PF-06700841 Drug: PF-06700841 | Phase 2 |
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 246 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor) |
Primary Purpose: | Treatment |
Official Title: | A PHASE 2A, DOUBLE-BLIND, RANDOMIZED, PLACEBO-CONTROLLED, PARALLEL GROUP STUDY TO EVALUATE THE EFFICACY AND SAFETY OF ORAL PF-06651600 AND PF-06700841 AS INDUCTION AND OPEN LABEL EXTENSION TREATMENT IN SUBJECTS WITH MODERATE TO SEVERE CROHN'S DISEASE |
Actual Study Start Date : | February 2, 2018 |
Estimated Primary Completion Date : | October 30, 2023 |
Estimated Study Completion Date : | October 30, 2023 |

Arm | Intervention/treatment |
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Experimental: PF-06700841 or placebo |
Drug: Placebo PF-06700841
12 weeks, followed by PF-06700841, 30 mg QD for 52 weeks Drug: PF-06700841 60 mg QD for 12 weeks followed by 30 mg QD for up to 52 weeks |
Experimental: PF-06651600 or placebo |
Drug: PF-06651600 Placebo
12 weeks, followed by PF-06651600, 50 mg once daily (QD) for 52 weeks Drug: PF-06651600 200 mg QD for 8 weeks, followed by 50 mg QD up to 56 weeks |
- Proportion of subjects achieving SES CD 50 (>50% reduction in SES CD from baseline) at Week 12. [ Time Frame: 12 weeks ]
- Number of subjects with adverse events [ Time Frame: Baseline of extension period (Week 12) to week 68 ]
- Number of subjects with serious adverse events [ Time Frame: Baseline of extension period (Week 12) to week 68 ]
- Number of subjects with electrocardiogram findings of potential clinical importance [ Time Frame: Baseline of extension period (Week 12) to week 68 ]
- Number of subjects with laboratory tests findings of potential clinical importance [ Time Frame: Baseline of extension period (Week 12) to week 68 ]
- Number of subjects withdrawal due to adverse events [ Time Frame: Baseline of extension period (Week 12) to week 68 ]
- Number of subjects with vital signs findings of potential clinical importance [ Time Frame: Baseline of extension period (Week 12) to week 68 ]
- Number of participants with potentially clinically important serious infections findings [ Time Frame: 64 weeks ]
- Mean change from baseline in SES-CD score at Week 12. [ Time Frame: Baseline, week 12 ]
- Proportion of subjects achieving SES-CD 25 at Week 12. [ Time Frame: Baseline, week 12 ]Number of subjects achieving SES-CD 25 at Week 12.
- Proportion of subjects achieving endoscopic remission (SES-CD less than or equal to 2) at Week 12. [ Time Frame: Week 12 ]Number of subjects achieving endoscopic remission (SES-CD less than or equal to 2) at Week 12.
- Proportion of subjects achieving mucosal healing at Week 12. [ Time Frame: Week 12 ]Number of subjects achieving mucosal healing at Week 12.
- Number of subjects with adverse events [ Time Frame: Baseline of induction period to week 12 ]Number of participants with reported adverse events
- Number of subjects with serious adverse events [ Time Frame: Baseline of induction period to week 12 ]Number of participants with reported serious adverse events
- Number of subjects with electrocardiogram findings of potential clinical importance. [ Time Frame: Baseline of induction period to week 12 ]Number of participants with potentially clinically important electrocardiogram findings.
- Number of subjects withdrawal due to adverse events [ Time Frame: Baseline of induction period to week 12 ]Number of subjects withdrawal due to adverse events.
- Number of subjects with vital signs findings of potential clinical importance. [ Time Frame: Baseline of induction period to week 12 ]Number of participants with potentially clinically important vital signs findings.
- Number of subjects with laboratory tests findings of potential clinical importance. [ Time Frame: Baseline of induction period to week 12 ]Number of participants with potentially clinically important laboratory findings.
- Proportion of subjects achieving SES CD 25 and SES CD 50 at Week 64 among subjects who achieved SES CD 25 and SES CD 50 at week 12 respectively. [ Time Frame: week 64 ]Number of subjects achieving SES-CD 25 and SES-CD 50 at Week 64 among subjects who achieved SES CD 25 and SES CD 50 at week 12
- Proportion of subjects achieving clinically meaningful endoscopic improvement (CMEI response) at week 64 among subjects who achieved CMEI response at Week 12. [ Time Frame: week 64 ]Number of subject achieving clinically meaningful endoscopic improvement (CMEI response) at week 64 among subjects who achieved CMEI response at week 12.
- Proportion of subjects achieving clinically meaningful endoscopic improvement (reduction of > or equal 3 points from baseline in SES CD score) at Week 12. [ Time Frame: Week 12 ]

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Ages Eligible for Study: | 18 Years to 75 Years (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Male and/or female subjects 18 years to 75 years of age
- Documented diagnosis of ileal, ileocolonic, or colonic CD with a minimum disease duration of 3 months, as determined by endoscopic and histopathology assessment.
- Endoscopic confirmation of active disease with total SES CD total score of at least 7. For isolated ileal disease, SES CD total score should be at least 4.
- An average daily liquid/soft stool frequency (SF) greater than or equal to 2.5 or daily abdominal pain (AP) greater than or equal to 2.0.
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Must have inadequate response to, loss of response to, or intolerance to at least one conventional therapy for CD:
•Steroids; Immunosuppressants (azathioprine [AZA], 6 MP, or methotrexate [MTX]); Anti TNF inhibitors (infliximab, adalimumab,certolizumab); Anti integrin inhibitors (eg, vedolizumab); Anti IL 12/23 inhibitor (ustekinumab).
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Subjects currently receiving the following treatment for CD are eligible providing they have been on stable doses as described below:
- Oral corticosteroids (prednisone or equivalent up to 25 mg/day; budesonide up to 9 mg/day). Stable dose for at least 2 weeks prior to baseline. If oral corticosteroids have been recently discontinued, they must have been stopped at least 2 weeks prior to baseline. Decreases in steroid use due to AEs are allowed.
- Oral 5 ASA or sulfasalazine are allowed providing that the dose is stable for at least 4 weeks prior to baseline.
- Crohn's disease related antibiotics are allowed providing that the dose is stable for at least 4 weeks prior to baseline. If antibiotics are stopped prior to baseline, they must be discontinued at least 4 days prior to baseline.
Exclusion Criteria:
- Diagnosis of indeterminate colitis, microscopic colitis, ischemic colitis, infectious colitis, radiation colitis, diverticular disease, ulcerative colitis (UC), or clinical findings suggestive of UC.
- Presence of active (draining) fistulae or intra abdominal or perineal abscesses.
- Strictures with obstructive symptoms.
- Short bowel syndrome.
- History of bowel perforation requiring surgical intervention within the past 12 months.
- Previous bowel surgery resulting in an existing stoma. Subjects who have a j pouch are excluded, as a j pouch can result in a stoma.
- History of bowel surgery within 6 months prior to baseline.
- Subjects displaying clinical signs of fulminant colitis or toxic megacolon.
- Subjects with primary sclerosing cholangitis.
- Subjects with evidence of colonic adenomas, dysplasia or neoplasia.
- Abnormal findings on the chest x ray film such as presence of tuberculosis (TB), general infections, heart failure, or malignancy.
- Any history of either untreated or inadequately treated latent or active TB infection, current treatment for active or latent TB infection or evidence of currently active TB by chest x ray, residing with or frequent close contact with individual(s) with active TB.
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Subjects receiving the following therapies within the time period described below or expected to receive any of these therapies during the study period:
- >9 mg/day of oral budesonide or >25 mg/day of prednisone or equivalent oral systemic corticosteroid dose within 2 weeks prior to baseline.
- IV, IM (parenteral), or topical (rectal) treatment of 5 ASA or corticosteroid enemas/suppositories within 2 weeks prior to baseline.
- Azathioprine, 6 mercaptopurine, or methotrexate within 2 weeks prior to baseline.
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Anti TNF inhibitors (or biosimilars thereof) as described below:
- Infliximab within 8 weeks prior to baseline;
- Adalimumab within 8 weeks prior to baseline;
- Certolizumab within 8 weeks prior to baseline;
- Anti integrin inhibitors (eg, vedolizumab) within 8 weeks prior to baseline.
- Ustekinumab within 8 weeks prior to baseline.
- Interferon therapy within 8 weeks prior to baseline.
- Subjects with prior treatment with lymphocyte depleting agents/therapies within 1 year prior to baseline (eg, CamPath[alemtuzumab], alkylating agents [eg, cyclophosphamide or chlorambucil], total lymphoid irradiation, etc).
- Subjects who have received rituximab or other selective B lymphocyte depleting agents within 1 year prior to baseline.
- Subjects previously receiving leukocyte apheresis, including selective lymphocyte, monocyte, or granulocyte apheresis, or plasma exchange within 6 months prior to baseline.
- Other marketed immunosuppressants or biologics with immunomodulatory properties within 3 months prior to baseline.
- Subjects who have received other JAK inhibitors within 3 months prior to baseline.
- Subjects who have not responded to or have been intolerant of other JAK inhibitors.
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Other investigational procedures(s) or product(s), such as immunosuppressants used in transplantation (eg, mycophenolate mofetil, cyclosporine, rapamycin, or tacrolimus) or live (attenuated) vaccine within 30 days prior to baseline.
14) Subjects with history of thrombotic event(s), including deep venous thrombosis (DVT), and known inherited conditions that predispose to hypercoagulability.

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): NCT03395184

Study Director: | Pfizer CT.gov Call Center | Pfizer |
Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
Responsible Party: | Pfizer |
ClinicalTrials.gov Identifier: | NCT03395184 |
Other Study ID Numbers: |
B7981007 2017-003359-43 ( EudraCT Number ) PIZZICATO ( Other Identifier: Alias Study Number ) |
First Posted: | January 10, 2018 Key Record Dates |
Last Update Posted: | September 23, 2022 |
Last Verified: | September 2022 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | Yes |
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. |
URL: | 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 |
Crohn Disease Inflammatory Bowel Diseases Gastroenteritis Gastrointestinal Diseases Digestive System Diseases |
Intestinal Diseases PF-06700841 Protein Kinase Inhibitors Enzyme Inhibitors Molecular Mechanisms of Pharmacological Action |