Plan your Phase 2 program from proof of concept to the Phase 3 decision

Work through 7 stages, from the end-of-Phase-1 data review to the End-of-Phase-2 meeting with FDA.

Open any step to see its typical duration, key deliverables and sub-steps.

Stage 1: Phase 2 Strategy and End-of-Phase-1 Review

Review the Phase 1 data, set the dose range and decision criteria, and choose between separate 2a and 2b studies or a combined design.

Duration: 2-4 months

Stage 2: Protocol and Statistical Design

Write the protocol, choose endpoints and biomarkers, design randomization and blinding, and pre-specify the statistical analysis.

Duration: 3-5 months
Prerequisites: Stage 1

Stage 3: Regulatory and Ethics Submissions

Add the Phase 2 protocol to the IND, get FDA input where the design needs it, and secure IRB or ethics committee approval.

Duration: 1-4 months, in parallel with study startup
Prerequisites: Stage 2

Stage 4: Study Startup and Site Activation

Select the CRO and vendors, find sites with access to the patient population, set up safety oversight and drug supply, and activate sites.

Duration: 3-6 months
Prerequisites: Stage 2

Stage 5: Enrollment, Treatment and Safety Oversight

Enroll patients, run the treatment and follow-up periods, monitor sites, report safety events, and support DSMB reviews and interim analyses.

Duration: 9-24 months, depending on enrollment rate and treatment duration
Prerequisites: Stage 3, Stage 4

Stage 6: Database Lock, Topline Results and Study Report

Clean and lock the database, unblind, run the pre-specified analyses, and write the clinical study report.

Duration: 4-9 months after the last patient's last visit
Prerequisites: Stage 5

Stage 7: End-of-Phase-2 Meeting and Phase 3 Decision

Decide whether to proceed, propose a Phase 3 design, and agree the plan with FDA at the End-of-Phase-2 meeting.

Duration: 3-6 months
Prerequisites: Stage 6

The durations show typical ranges. Your timeline depends on the indication, the study design, the enrollment rate and regulatory feedback. Use this plan to orient your team, and take regulatory advice for your own program.

Keep your Phase 2 program on schedule from protocol to the End-of-Phase-2 meeting

Cambrian Life Sciences tells your team what to do next, drafts and tracks the work, and shows how each decision affects timeline, cash and enrollment before you make it.

Still preparing an IND? Score your program against 21 CFR 312 with the free IND readiness assessment.