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Risedronate treatment for Children with severe Osteogenesis Imperfecta
ISRCTN ISRCTN76376467
ClinicalTrials.gov identifier
Public title Risedronate treatment for Children with severe Osteogenesis Imperfecta
Scientific title Bisphosphonate administration in children with severe osteogenesis imperfecta: A prospective randomised double blind controlled study of risedronate
Acronym RICO trial
Serial number at source B0696
Study hypothesis Children aged between four and seventeen who have osteogenesis imperfecta, which is a form of osteoporosis which causes multiple fractures, deformity and stunted growth, are to be offered Risedronate in a clinical trial aimed at increasing bone density.
Ethics approval South Sheffield Research Ethics Committee. Date of approval: 06/12/1999 (ref: SS 98/183)
Study design Randomised controlled trial
Countries of recruitment United Kingdom
Disease/condition/study domain Osteogenesis imperfecta
Participants - inclusion criteria Inclusion criteria amended as of 15/04/2008:
1. Children with osteogenesis imperfecta
2. Aged between 3 and 17 ("Aged between 4 and 17" at ethics approval. We subsequently had an approved amendment to reduce the lower age limit to 3 years; this applied to only one child)
3. Both male and female

Inclusion criterion provided at time of registration:
Children with osteogenesis imperfecta
Participants - exclusion criteria Added as of 10/04/2008:
1. Have a history of cancer
2. Have untreated rickets within one year prior to enrollment
3. Evidence of clinically significant organic or psychiatric disease on history or physical examination which in the opinion of the investigator would prevent the patient from completing the study
4. Have markedly abnormal pretreatment laboratory findings, except if in the opinion of the investigator, it would not prevent the patient from completing the study
5. Have a history of using anabolic steroids/estrogens/androgens within one year of enrollment
6. Have a history of using any of the following medications within 6 month of starting study drug for more than one month: calcitonin, vitamin D supplements >1000 IU per day, and calcitriol >1.5 mg/week
7. Have a history of using any bisphosphonate (except for more than a single dose of risedronate) and/or fluoride (>10 mg per day). Have a documented history of an abnormal or allergic reaction to bisphosphonates
8. Pregnancy or sexually active subjects unwilling to take appropriate contraceptive measures
9. Any limb-lengthening procedure within 6 of enrollment
10. Participation in another clinical trial, involving active intervention within 30 days prior to enrollment
11. Serum creatinine >150 µmol/L
Anticipated start date 31/07/2001
Anticipated end date 31/12/2007
Status of trial Completed
Patient information material
Target number of participants Added as of 10/04/2008: Planned recruitment: 60; Actual recruitment: 53
Interventions Patients will be randomised to either low (0.2 mg/kg/week), medium (1 mg/kg/week) or high (2 mg/kg/week) dose of the bisphosphonate risedronate. Treatment will continue for 3 years.
Primary outcome measure(s) Added as of 10/04/2008:
Number of incident non-vertebral fractures in each group at 2 years.
Secondary outcome measure(s) Added as of 10/04/2008:
The following were assessed at 2 years:
1. Total body and lumbar spine bone area
2. Bone mineral content
3. Areal bone mineral density and volumetric bone mineral density
Sources of funding 1. Arthritis Research Campaign (ARC) (UK)
2. Alliance for Better Bone Health (UK)
Trial website
Publications
Contact name Professor  Nick  Bishop
  Address Institute of Child Health
University of Sheffield
Children's Hospital
Western Bank
  City/town Sheffield
  Zip/Postcode S10 2TH
  Country United Kingdom
  Tel +44 (0)114 271 7677
  Fax +44 (0)114 275 5364
  Email n.j.bishop@sheffield.ac.uk
Sponsor Arthritis Research Campaign (ARC) (UK)
  Address Copeman House
St Mary's Court
St Mary's Gate
Chesterfield
  City/town Derbyshire
  Zip/Postcode S41 7TD
  Country United Kingdom
  Email info@arc.org.uk
  Sponsor website: http://www.arc.org.uk
Date applied 04/02/2002
Last edited 15/04/2008
Date ISRCTN assigned 04/02/2002
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