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Intravenous pamidronate treatment in children with moderate-to-severe osteogenesis imperfecta started under three years of age

Intravenous pamidronate treatment in children with moderate-to-severe osteogenesis imperfecta started under three years of age

Samenvatting

OBJECTIVE: Evaluate clinical outcome of early cyclic intravenous pamidronate treatment in children with moderate-to-severe osteogenesis imperfecta (OI), commenced before three years of age. METHODS: A retrospective review of 17 patients with moderate-to-severe OI. Development, anthropometry, fracture history, bone mineral density (BMD) and biochemistry were collected at baseline, 12 and 24 months. RESULTS: Four had OI type I, eleven had type III, one OI-FKBP10 type and one OI type V. Mean age at start of pamidronate was 14 ± 11 months. Pamidronate ranged from 6 to 12 mg/kg/year. No adverse reaction apart from fever and vomiting was noted. Long bone fracture decreased from a mean of 10.4/year to 1.2/year after 12 months and 1.4/year after 24 months (p = 0.02). Lumbar spine age- and height-matched BMD Z-scores increased (p < 0.005). Sixteen with vertebral compression fractures at baseline all showed improved vertebral shape (p < 0.001). Concavity index, likewise, improved (p < 0.005). Motor milestones compared to historical data show earlier attainment in rolling over, crawling, pulling to stand and walking independently but not sitting. CONCLUSION: Cyclic intravenous pamidronate, started under 3 years of age in children with moderate-to-severe OI, was well tolerated and associated with an increase in lumbar spine BMD, reduced fracture frequency, vertebral remodelling and attainment of motor milestones at an earlier age.

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OrganisatieHogeschool van Amsterdam
Gepubliceerd inHormone Research in Paediatrics S. Karger AG, Vol. 79, Uitgave: 6, Pagina's: 333-40
Datum2013-07
TypeArtikel
DOI10.1159/000351374
TaalEngels

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