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Journal Article
Multicenter Study
Growth hormone improves short stature in children with Diamond-Blackfan anemia.
Pediatric Blood & Cancer 2015 March
BACKGROUND: Diamond-Blackfan anemia (DBA), an inherited marrow failure syndrome, has severe hypoplastic anemia in infancy and association with aplastic anemia, MDS/leukemia, and other malignancies. Short stature is present in most patients. Isolated cases have demonstrated improved growth on growth hormone (GH) therapy.
PROCEDURES: GH treatment data were obtained from 19 children with DBA (6 at our site and 13 from Genentech). Control data from 44 non-GH treated children were provided by Diamond Blackfan Anemia Registry. Annual growth velocity (GV) and height-for-age Z-scores (HAZ) were compared between groups and for up to 4y of GH treatment.
RESULTS: Constructed DBA-specific male and female height-for-age charts for non-GH treated patients revealed short stature compared to CDC norms. GH-treated patients had significantly lower HAZ prior to treatment initiation compared to non-GH-treated controls. Among GH-treated patients, GV significantly improved in the first two years relative to pre-treatment. HAZ significantly improved in each of 4y of GH therapy compared to baseline. After 2y of therapy, HAZ for GH-treated patients were not significantly different from controls, demonstrating successful catch-up growth.
CONCLUSIONS: GH treatment in children with DBA improves both GV and HAZ during treatment sustained for up to 4y. Very short children with DBA can be treated successfully with GH to restore stature to levels comparable to less affected patients. DBA height charts are useful tools for assessing age-specific growth in this typically short population. Careful consideration of individualized benefit of GH therapy versus risk is important in view of long-term underlying ∼5% malignancy risk in DBA.
PROCEDURES: GH treatment data were obtained from 19 children with DBA (6 at our site and 13 from Genentech). Control data from 44 non-GH treated children were provided by Diamond Blackfan Anemia Registry. Annual growth velocity (GV) and height-for-age Z-scores (HAZ) were compared between groups and for up to 4y of GH treatment.
RESULTS: Constructed DBA-specific male and female height-for-age charts for non-GH treated patients revealed short stature compared to CDC norms. GH-treated patients had significantly lower HAZ prior to treatment initiation compared to non-GH-treated controls. Among GH-treated patients, GV significantly improved in the first two years relative to pre-treatment. HAZ significantly improved in each of 4y of GH therapy compared to baseline. After 2y of therapy, HAZ for GH-treated patients were not significantly different from controls, demonstrating successful catch-up growth.
CONCLUSIONS: GH treatment in children with DBA improves both GV and HAZ during treatment sustained for up to 4y. Very short children with DBA can be treated successfully with GH to restore stature to levels comparable to less affected patients. DBA height charts are useful tools for assessing age-specific growth in this typically short population. Careful consideration of individualized benefit of GH therapy versus risk is important in view of long-term underlying ∼5% malignancy risk in DBA.
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