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Study identifier: NCT06851559 Synced from ClinicalTrials.gov · August 06, 2026
● Study status: Active Not Recruiting

A Study in Adult Participants With EoE to Evaluate Vonoprazan 20 mg Compared to Placebo After 12 Weeks and to Evaluate Vonoprazan 20 mg Up to 24 Weeks

Condition: Eosinophilic Esophagitis  ·  Sponsor: Phathom Pharmaceuticals, Inc.

PhasePhase 2
Planned participants95
Who can joinAll sexes, 18 Years to no upper limit
Healthy volunteersNo

About this study

The primary objective of this study is to assess the efficacy of vonoprazan 20 mg once daily (QD) compared to placebo QD in the number of participants with a peak eosinophilic histologic response \<15 eosinophils per high-power field (eos/hpf) after 12 weeks of therapy.

This description comes directly from the study's public registry record.

Talk to the study team

No contact information is available for this study as per the public registry record.

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Locations (41)

Preferred Research Partners, IncLittle Rock, Arkansas, United States
GW Research, IncChula Vista, California, United States
Southern California Research Institute Medical GroupLos Angeles, California, United States
Rocky Mountain GastroenterologyLakewood, Colorado, United States
Western States Clinical Research, Inc.Wheat Ridge, Colorado, United States
Connecticut Clinical Research InstituteBristol, Connecticut, United States
Nature Coast Clinical ResearchInverness, Florida, United States
Encore Borland-Groover Clinical ResearchJacksonville, Florida, United States
International Center for ResearchTampa, Florida, United States
Gastroenterology Associates of Central Georgia, LLCMacon, Georgia, United States
Treasure Valley Medical ResearchBoise, Idaho, United States
Grand Teton Research GroupIdaho Falls, Idaho, United States

+ 29 more locations — full list on the registry record.

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