๐Ÿ›๏ธ Verified NIH Record โ€ข Updated 2026-02-17

Safety and Efficacy of Pembrolizumab (MK-3475) in Children and Young Adults With Classical Hodgkin Lymphoma (MK-3475-667/KEYNOTE-667) (NCT03407144)

An Open-label, Uncontrolled, Multicenter Phase II Trial of MK-3475 (Pembrolizumab) in Children and Young Adults With Newly Diagnosed Classical Hodgkin Lymphoma With Inadequate (Slow Early) Response to Frontline Chemotherapy (KEYNOTE 667)

๐Ÿ”ต Active, Not Recruiting Phase2 ๐Ÿ’Š Investigational Drug / Biologic Sponsor: Merck Sharp & Dohme LLC

๐Ÿฉบ Plain-English Summary (8th-Grade Level)

This study will examine the safety and efficacy of pembrolizumab (MK-3475) in combination with chemotherapy in children and young adults with newly diagnosed classical Hodgkin Lymphoma (cHL) who are slow early responders (SERs) to frontline chemotherapy.

Who can join: Review the eligibility criteria below.

Location: Children's Hospital of Alabama ( Site 0023) โ€” Birmingham, Alabama

Age range: 3 Years to 25 Years

๐Ÿ“‹ "Do I Qualify?" โ€” 1-Minute Self Screener

Instant Checklist

Full eligibility criteria are available on the official NIH protocol. View the criteria โ†—

๐Ÿ“ All Participating Trial Locations (93 Sites)

Showing the first 25 of 93 sites.

  • Children's Hospital of Alabama ( Site 0023) โ€” Birmingham, Alabama
  • Phoenix Childrens Hospital ( Site 0034) โ€” Phoenix, Arizona
  • Arkansas Children's Hospital ( Site 0046) โ€” Little Rock, Arkansas
  • Kaiser - Orange County ( Site 0084) โ€” Anaheim, California
  • Kaiser Permanente ( Site 0082) โ€” Downey, California
  • Kaiser - Fontana ( Site 0083) โ€” Fontana, California
  • MemorialCare Health System - Long Beach Medical Center-Cherese Mari Laulhere Children's Village ( Si โ€” Long Beach, California
  • Kaiser Permanente Downey Medical Center ( Site 0024) โ€” Los Angeles, California
  • Kaiser Permanente - Oakland ( Site 0047) โ€” Oakland, California
  • Kaiser Permanente - Roseville ( Site 0080) โ€” Roseville, California
  • Kaiser Permanente - Santa Clara ( Site 0079) โ€” Santa Clara, California
  • Children's Hospital - Colorado ( Site 0028) โ€” Aurora, Colorado
  • Connecticut Children's Medical Center ( Site 0045) โ€” Hartford, Connecticut
  • Yale Cancer Center ( Site 0061) โ€” New Haven, Connecticut
  • Children's National Medical Center ( Site 0090) โ€” Washington D.C., District of Columbia
  • University of Florida ( Site 0051) โ€” Gainesville, Florida
  • Memorial Regional Hospital/Joe DiMaggio Children's Hospital ( Site 0048) โ€” Hollywood, Florida
  • Arnold Palmer Hospital ( Site 0065) โ€” Orlando, Florida
  • Children's Healthcare of Atlanta at Egleston ( Site 0033) โ€” Atlanta, Georgia
  • University of Chicago ( Site 0066) โ€” Chicago, Illinois
  • Riley Hospital for Children ( Site 0091) โ€” Indianapolis, Indiana
  • University of Kentucky Markey Cancer Center ( Site 0057) โ€” Lexington, Kentucky
  • University of Louisville-Norton Children's Hospital ( Site 0059) โ€” Louisville, Kentucky
  • Johns Hopkins University ( Site 0025) โ€” Baltimore, Maryland
  • Children's Hospital of Michigan ( Site 0056) โ€” Detroit, Michigan

๐Ÿ’ฐ Cost, Insurance & Patient Rights

  • 100% Free Items: The investigational treatment and protocol-required procedures are supplied at zero cost by the sponsor.
  • Routine Patient Care: Under federal law (ACA ยง 2709) and many state statutes, routine care costs are covered during participation.
  • Voluntary Participation: You may withdraw at any time without affecting your standard medical care.

Explore by condition: All Hodgkin Lymphoma clinical trials

๐Ÿ’ก How to Participate

  1. Check the checklist above to see if you may qualify.
  2. Review the official NIH record below to find the coordinating site.
  3. Ask about the visit schedule, what is covered at no cost, and any travel support.
  4. Confirm with your own doctor before making a decision.
๐Ÿ›๏ธ View Official NIH Record โ†—