91 girls with Turner syndrome (TS) with a mean chronological age (CA) and bone age (BA) of 10.3 ± 2.3 and 8.9 ± 1.9 years, respectively, were randomly assigned to subcutaneous treatment with recombinant human growth hormone (rhGH) alone (n = 47), 2.6 IU/m2 body surface area daily or combination treatment (n = 44) with the same dose of rhGH and oxandrolone 0.1 mg/kg body weight orally, for the first 12 months of this study. During the 1 st year of therapy, there was a striking increase in height velocity (HV) in both groups, from 4.0 ± 0.8 to 6.3 ± 1.3 cm/year [HV standard (standards of untreated Turner patients) deviation score (SDS) for CA from 0.0 ± 0.7 to 2.9 ± 1.3] in the rhGH group and from 4.2 ± 1.2 to 8.5 ± 1.7 cm/year (HV SDS-CA from +0.3 ± 1.0 to+5.6 ± 1.6) in the combination group. The difference between the groups was statistically significant (p < 0.01). During the 2nd year of treatment, the rhGH dose was increased to 3.4 IU/m2 daily for the rhGH-alone group, whereas in the combination treatment group the oxandrolone dose was reduced to 0.05 mg/kg daily. HV was maintained at significantly higher levels than those prior to treatment, at 5.3 ± 1.1 cm/year (HV SDS-CA:+2.1 ± 1.3) and 6.2 ± 1.5 cm/year (HV SDS-CA:+3.6 ± 1.4) in the rhGH-alone and the combination group, respectively (p < 0.001). After 2 years of treatment, the mean predictable adult height had increased by +3.6 ± 2.4 cm in the rhGH-alone group and by +5.3 ± 3.6 cm in the combination group. Both treatment regimens were very well tolerated although clitoral enlargement was seen in 15 of the 44 girls of the combination group who had been treated with 0.1 mg oxandrolone daily for the 1 st year. Impaired glucose tolerance was infrequently seen in girls of either group and the higher oxandrolone dose of the 1st year affected serum lipoprotein levels. Our data suggest that rhGH may improve adult height in girls with TS. This beneficial effect may be further increased by the addition of a low dose of oxandrolone (0.05 mg/kg/day).

This content is only available via PDF.
Copyright / Drug Dosage / Disclaimer
Copyright: All rights reserved. No part of this publication may be translated into other languages, reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying, recording, microcopying, or by any information storage and retrieval system, without permission in writing from the publisher.
Drug Dosage: The authors and the publisher have exerted every effort to ensure that drug selection and dosage set forth in this text are in accord with current recommendations and practice at the time of publication. However, in view of ongoing research, changes in government regulations, and the constant flow of information relating to drug therapy and drug reactions, the reader is urged to check the package insert for each drug for any changes in indications and dosage and for added warnings and precautions. This is particularly important when the recommended agent is a new and/or infrequently employed drug.
Disclaimer: The statements, opinions and data contained in this publication are solely those of the individual authors and contributors and not of the publishers and the editor(s). The appearance of advertisements or/and product references in the publication is not a warranty, endorsement, or approval of the products or services advertised or of their effectiveness, quality or safety. The publisher and the editor(s) disclaim responsibility for any injury to persons or property resulting from any ideas, methods, instructions or products referred to in the content or advertisements.
You do not currently have access to this content.