Clinical trial Recruiting at 1 site Phase 1 Interventional Ages 5 to 18

Early zoledronate to prevent bone problems after pediatric stem cell transplant

Official title: Early Intervention With Zoledronate to Safely Prevent Bone Health Complications in Pediatric Hematopoietic Stem Cell Transplant Survivors

Run by Children's Hospital Medical Center, Cincinnati · NCT07375290 · Data updated 2026-11-12

This pilot tests whether giving zoledronate early can prevent bone loss and fractures in children and teens undergoing or recovering from hematopoietic stem cell transplant who are at high risk.

Quick facts

PhasePhase 1
Study typeInterventional
Ages5 Years to 18 Years
SexAll
Enrollment20 (estimated)
SponsorChildren's Hospital Medical Center, Cincinnati
Academic / other
Drugs / interventionsradiation
Locations1 site (Cincinnati, Ohio)
StatusRecruiting
StartedJuly 17, 2026
Main results expectedJanuary 2028
Study endsNovember 2028
Registry record updatedAugust 10, 2026
Trial IDNCT07375290 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are children and adolescents aged 5–18 admitted to Cincinnati Children's for HSCT who have a height-adjusted DXA Z-score < -2.0 before transplant or who develop new acute or chronic GVHD after transplant, and who do not have exclusion conditions such as low vitamin D, renal impairment, or prior bisphosphonate exposure.

Probably not a fit

Patients younger than 5 or older than 18, those with prior bisphosphonate use, vitamin D deficiency, significant renal impairment, radiation-sensitive syndromes (e.g., Fanconi anemia), active febrile illness or uncontrolled infection, pregnancy or breastfeeding, or those without low bone density/high risk are unlikely to benefit from this intervention.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This Phase 1 pilot will give zoledronate to high-risk pediatric HSCT patients either around the time of transplant or after they develop graft-versus-host disease, with the primary goal of characterizing safety and looking for preliminary signals of benefit. Eligible patients are 5–18 years old with a height-adjusted DXA Z-score < -2.0 prior to transplant or those who develop de novo acute or chronic GVHD after transplant; major exclusions include prior bisphosphonate use, low 25-OH vitamin D, renal dysfunction, active infection, and radiation-sensitive syndromes. Treatment is administered during an inpatient admission at Cincinnati Children's Hospital Medical Center and participants will be monitored for adverse events, renal function, mineral metabolism, and changes in bone mineral density. Outcomes include safety endpoints and early measures of bone density and fracture prevention over follow-up.

Why it matters

Potential benefit: If successful, early zoledronate could reduce the development of osteoporosis and fractures after pediatric HSCT, lowering pain and long-term bone complications.

How similar studies have gone: Bisphosphonates including zoledronate have been effective for treating established pediatric osteoporosis, but prophylactic early use around HSCT is novel and has limited prior evidence.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patients ≥5 and ≤18 years old who are preparing for HSCT with a height-for-age corrected DXA Z-score of \<-2.0 and admitted to a CCHMC inpatient unit.
* Patients ≥5 and ≤18 years old recovering from HSCT and who have developed de novo acute or chronic GVHD and are admitted to a CCHMC inpatient unit.

Exclusion Criteria:

* Age \<5 years and \>18 years
* Patients with Fanconi anemia or other radiation-sensitive syndromes with increased malignancy risk
* history of prior bisphosphonate use
* low 25-OH vitamin D levels (\<20 ng/mL)
* active febrile illness
* uncontrolled infection
* Elevated creatinine at the time of enrollment, history or renal failure, or documented low glomerular filtration rate (GFR≤90)
* Active bone disease including history of abnormal PTH level for any reason, active bone fracture/healing, or primary disorder of bone development or metabolism.
* Women who are pregnant or breast feeding.

Where it's running

  • Cincinnati Children's Hospital Medical Center
    Cincinnati, Ohio, United States
    Recruiting

Study contacts

  • Principal investigator: Jonathan Howell, MD, PhD — Children's Hospital Medical Center, Cincinnati
  • Study coordinator: Brady Landon
  • Email: Brady.Landon@cchmc.org
  • Phone: 513-803-5490

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.