Melanie K Aldridge1,2,3, Peter Trnka4,5, Anna Francis4,5, Steven J McTaggart4,5. 1. Child and Adolescent Renal Service, Queensland Children's Hospital, Brisbane, Australia. melanie.aldridge@health.qld.gov.au. 2. University of Queensland, Brisbane, Australia. melanie.aldridge@health.qld.gov.au. 3. Department of Nephrology, Queensland Children's Hospital, 501 Stanley Street, South Brisbane, Queensland, Australia. melanie.aldridge@health.qld.gov.au. 4. Child and Adolescent Renal Service, Queensland Children's Hospital, Brisbane, Australia. 5. University of Queensland, Brisbane, Australia.
Abstract
BACKGROUND: The effectiveness of rhGH on growth and final height (FH) was determined in children with CKD and kidney failure using data linkage from two national databases. METHODS: Data on Australian children with CKD and kidney failure treated with rhGH were obtained by linking ANZDATA and OzGrow registries. The CKD cohort included children treated with rhGH prior to kidney replacement therapy (KRT). The KRT cohort consisted of children with kidney failure, some received rhGH, and some were untreated. Height standard deviation scores (Ht-SDS) were calculated with final height defined as last height recorded in girls > 16 years of age and boys > 17 years of age. RESULTS: In the CKD group, there were 214 children treated with rhGH prior to KRT. In the KRT group, there were 1,032 children, 202 (19%) treated with rhGH and 830 (81%) untreated. Growth significantly improved in the rhGH-treated CKD group (ΔHt-SDS = +0.80 [+0.68 to +0.92]; p < 0.001) and the rhGH-treated KRT group (ΔHt-SDS = +0.38 [+0.27 to +0.50]; p < 0.001). Within the KRT cohort, final height was available for 423 patients (41%), of which 137 (32%) had been treated with rhGH. The rhGH-treated group demonstrated marginally better catch-up growth (ΔHt-SDS = +0.05 [-0.18 to 0.29]) compared to the non-rhGH-treated group (ΔHt-SDS = -0.03 [-0.16 to 0.10]; p = 0.49). CONCLUSIONS: This large linkage study confirms rhGH is effective in improving height in children with CKD pre-KRT. However, rhGH appears to have a variable impact on growth once children have commenced KRT resulting in a marginal impact on final height.
BACKGROUND: The effectiveness of rhGH on growth and final height (FH) was determined in children with CKD and kidney failure using data linkage from two national databases. METHODS: Data on Australian children with CKD and kidney failure treated with rhGH were obtained by linking ANZDATA and OzGrow registries. The CKD cohort included children treated with rhGH prior to kidney replacement therapy (KRT). The KRT cohort consisted of children with kidney failure, some received rhGH, and some were untreated. Height standard deviation scores (Ht-SDS) were calculated with final height defined as last height recorded in girls > 16 years of age and boys > 17 years of age. RESULTS: In the CKD group, there were 214 children treated with rhGH prior to KRT. In the KRT group, there were 1,032 children, 202 (19%) treated with rhGH and 830 (81%) untreated. Growth significantly improved in the rhGH-treated CKD group (ΔHt-SDS = +0.80 [+0.68 to +0.92]; p < 0.001) and the rhGH-treated KRT group (ΔHt-SDS = +0.38 [+0.27 to +0.50]; p < 0.001). Within the KRT cohort, final height was available for 423 patients (41%), of which 137 (32%) had been treated with rhGH. The rhGH-treated group demonstrated marginally better catch-up growth (ΔHt-SDS = +0.05 [-0.18 to 0.29]) compared to the non-rhGH-treated group (ΔHt-SDS = -0.03 [-0.16 to 0.10]; p = 0.49). CONCLUSIONS: This large linkage study confirms rhGH is effective in improving height in children with CKD pre-KRT. However, rhGH appears to have a variable impact on growth once children have commenced KRT resulting in a marginal impact on final height.
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