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TerminatedNCT01604889Updated Apr 21, 2026

A Phase 1/2 Randomized, Blinded, Placebo Controlled Study of Ipilimumab in Combination With Epacadostat or Placebo in Subjects With Unresectable or Metastatic Melanoma

A Phase 1/2 interventional study of Epacadostat and ipilimumab in Melanoma, sponsored by Incyte Corporation. Terminated at 7 sites in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-04-21.

Sponsored by Incyte Corporation · Phase 1/2, Interventional, and Treatment

Why this study was terminated
Further development of this compound with ipilimumab in the treatment of melanoma is no longer being pursued.

From the registry’s dates

  • Primary completion was Dec 2016, 9 years 9 months ago, and no results have been posted to the registry; the sponsor requested a delay in submitting them in May 2017.
Phase
Phase 1/2
Study type
Interventional
Enrollment
50
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

The study design included an open-label, dose escalation phase followed by a blinded, randomized phase, which combined epacadostat (an oral IDO1 inhibitor) with an approved therapy and compared to approved therapy plus placebo in metastatic melanoma patients.

Only Phase 1 of the study, dose escalation phase, was conducted. The study was terminated due to a business decision.

02

Conditions studied

  • Melanoma

Keywords

  • Melanoma, Skin Cancer, Oncology
03

In context

Melanoma

3,006 studies on the registry are indexed under Melanoma; 520 are open to participants now.

This study's enrollment of 50 is above the median of 38 across 2,351 interventional studies indexed under Melanoma.

Browse Melanoma studies →

Lead sponsor

Incyte Corporation is the lead sponsor of 286 studies on the registry; 37 are open to participants now.

Of its 144 completed or terminated interventional studies of FDA-regulated products, 93 (65%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Male or female subjects, aged 18 years or older with unresectable or metastatic melanoma.
  • A life expectancy of >12 weeks.
  • Laboratory ranges and medical criteria met, as defined within the protocol.
  • Subject may have received more than 1 prior regimen of systematic treatment for unresectable or metastatic melanoma.
  • For Phase 2 period of the study only, Subjects must have archival tumor tissue available and collected with the prior 6 months or accessible disease for pre-treatment, study biopsy.

Exclusion criteria

Exclusion Criteria:

  • Pregnant or nursing women.
  • Current investigational trial participation with another investigational product or subjects who have received any anticancer medications within 21 days prior to screening (6 weeks for mitomycin-C or nitrosoureas.)
  • Subjects receiving monoamine oxidase inhibitors (MAOI)s; subjects who have ever had Serotonin Syndrome after receiving one or more serotonergic drugs.
  • Subjects who have received prior immune checkpoint inhibitors (eg anti-CTLA-4, anti-programmed death 1 (PD-1), anti-programmed death-ligand 1 (PD-L1) and others) who have had Grade 3 or 4 hepatotoxicity, immune colitis requiring infliximab, endocrine toxicity not controlled by replacement, any other Grade 4 immune adverse events (AEs) or ocular toxicity
  • Subjects with protocol-specified active autoimmune process except vitiligo or thyroiditis.
  • Subjects with concurrent conditions that would jeopardize the safety of the safety of the subject or compliance with the protocol.
05

Study design

Phase
Phase 1 / Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
50 participants (actual)

Study arms

  • Experimental
    Epacadostat 25 mg

    25 mg BID in combination with ipilimumab

    Drug: Epacadostat · Drug: ipilimumab

  • Experimental
    Epacadostat 50 mg

    50 mg BID in combination with ipilimumab. 50 mg BID Int indicates 50 mg BID daily 2 weeks on and 1 week off.

    Drug: Epacadostat · Drug: ipilimumab

  • Experimental
    Epacadostat 75 mg

    75 mg once a day (QD) in combination with ipilimumab. 75 mg total daily dose indicates 50 mg every day before noon (QAM ) and 25 mg every day after noon (QPM).

    Drug: Epacadostat · Drug: ipilimumab

  • Experimental
    Epacadostat 100 mg

    100 mg twice daily (BID) in combination with ipilimumab

    Drug: Epacadostat · Drug: ipilimumab

  • Experimental
    Epacadostat 300 mg

    300 mg twice daily (BID) in combination with ipilimumab

    Drug: Epacadostat · Drug: ipilimumab

Interventions

  • DrugEpacadostat

    Also known as: INCB024360

  • Drugipilimumab

    ipilimumab 3 mg/kg intravenous (IV)

06

What researchers measure

Primary outcomes

  1. Phase 1: Number of patients with adverse events as a measure of Safety and Tolerability.

    Time frame: Baseline and minimally every 3 weeks until discontinuation or death (estimated timeframe to be 29 months from first patient enrolled to last patient discontinued or dead).

  2. Phase 2: Overall survival.

    Time frame: Measured every 4 weeks until the 50th death occurs, then follow-up is measured every 3 months (estimated timeframe to be 29 months from first patient enrolled to last patient death).

Secondary outcomes

  1. Preliminary efficacy as assessed by tumor response.

    Time frame: Baseline and every nine weeks (3 cycles) thereafter (estimated timeframe is that each patient will be on study for 11 months).

  2. Evaluation of progression free survival.

    Time frame: Measured every 4 weeks until the 50th death occurs, then follow-up is measured every 3 months (estimated timeframe is that patients will progress after 11 months).

07

Study locations

7 sites
  • Los Angeles, California, United States
  • Miami, Florida, United States
  • Tampa, Florida, United States
  • Chicago, Illinois, United States
  • Durham, North Carolina, United States
  • Philadelphia, Pennsylvania, United States
  • Pittsburgh, Pennsylvania, United States
08

References and documents

Publications

  • Gibney GT, Hamid O, Lutzky J, Olszanski AJ, Mitchell TC, Gajewski TF, Chmielowski B, Hanks BA, Zhao Y, Newton RC, Maleski J, Leopold L, Weber JS. Phase 1/2 study of epacadostat in combination with ipilimumab in patients with unresectable or metastatic melanoma. J Immunother Cancer. 2019 Mar 20;7(1):80. doi: 10.1186/s40425-019-0562-8. PubMed 30894212 ↗
09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 21, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT01604889
Lead sponsor
Incyte Corporation
Responsible party
Sponsor
First posted
May 24, 2012
Start date
Mar 29, 2012
Primary completion
Dec 27, 2016
Completion
Jan 20, 2017
Last update
Apr 21, 2026

Study contacts

Lance Leopold, M.D.
study director · Incyte Corporation

Oversight

Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is terminated, as verified in Apr 2026. You cannot join it, but the record below documents what was studied.

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