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RF26 | PSAT150 Growth Outcomes From the Phase 2 and Phase 3 Studies of Once Weekly Somatrogon vs Daily Genotropin in Pediatric Patients With Growth Hormone Deficiency: Comparisons With Published Literature and an International Growth Study Database
BACKGROUND: Somatrogon is a long-acting recombinant human growth hormone (hGH) currently in development as a once-weekly injectable treatment for children with growth hormone deficiency (GHD). In a phase 2 (NCT01592500) and a phase 3 (NCT02968004) study, patients received either once-weekly somatrog...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Oxford University Press
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9625182/ http://dx.doi.org/10.1210/jendso/bvac150.1338 |
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author | Cara, Jose Carlsson, Martin Rosenfeld, Ron G Wajnrajch, Michael P Wang, Ronnie Zadik, Zvi |
author_facet | Cara, Jose Carlsson, Martin Rosenfeld, Ron G Wajnrajch, Michael P Wang, Ronnie Zadik, Zvi |
author_sort | Cara, Jose |
collection | PubMed |
description | BACKGROUND: Somatrogon is a long-acting recombinant human growth hormone (hGH) currently in development as a once-weekly injectable treatment for children with growth hormone deficiency (GHD). In a phase 2 (NCT01592500) and a phase 3 (NCT02968004) study, patients received either once-weekly somatrogon or once-daily Genotropin. AIMS: Compare the phase 2 and 3 study results with growth data from published literature and a database of children treated with once-daily Genotropin. METHODS: In the 12-month main portion of the phase 2 study (004), patients were randomized to 1 of 3 once-weekly somatrogon doses (0.25, 0.48, and 0.66 mg/kg/week) or once-daily Genotropin (0.24 mg/kg/week). After the main portion of 004, patients continued into the open-label extension (OLE), consisting of an additional 12 months at the original somatrogon dose (Genotropin recipients were randomized to 1 of the 3 somatrogon dose regimens), after which all patients received somatrogon at 0.66 mg/kg/week. In the 12-month main portion of the phase 3 study (006), patients were randomized to once-weekly somatrogon (0.66 mg/kg/week) or once-daily Genotropin (0.24 mg/kg/week). After the main portion of 006, all patients received somatrogon (0.66 mg/kg/week) in an OLE. Four year growth data from 004 and 006 were pooled and analyzed, then compared with growth data from matched subsets of hGH-treated patients as reported by Ranke and Lindberg1 (Genotropin dose: 0.22-0.31 mg/kg/week) and Bakker et al,2 (hGH dose: most patients received 0.3 mg/kg/week) and with data from a matched cohort from the Pfizer International Growth Study Database (KIGS), in which patients received once-daily Genotropin (0.20-0.28 mg/kg/week). RESULTS: The combined mean height velocity (HV) at the end of the 12-month main portions of study 004 and 006 was 10.37 cm/year for somatrogon-treated patients. The Year 1 mean HV reported by Ranke and Lindberg for children with a chronological average-centered age of 7.5 years was 9.4 cm/year and 8.3 cm/year for children with severe and moderate GHD, respectively. The Year 1 mean HV reported by Bakker et al for children with idiopathic GHD aged 7.5 years at the beginning of hGH therapy was ∼10 cm/year (for males and females). The mean annual HVs during the OLE period were 9.37, 8.97, and 9.03 cm/year at OLE Year 1, 2 and 3 in somatrogon-treated patients, which were numerically greater than HVs of 7.09, 6.35, and 6.08 cm/year at the corresponding annual visit in the matched KIGS cohort (Genotropin dose: 0.20–0.28 mg/kg/week). CONCLUSIONS: Comparisons with published literature and the KIGS database indicate that children treated with once-weekly somatrogon (0.66 mg/kg/week) showed good growth, compared with children treated with once-daily hGH, strengthening the expectation that somatrogon-treated children are likely to achieve a satisfactory final adult height. REFERENCES: 1.Ranke and Lindberg. JCEM. 2010;95(3): 1229-1237. 2.Bakker, Frane, et al. JCEM. 2008;93(2): 352-357. Presentation: Saturday, June 11, 2022 1:00 p.m. - 3:00 p.m., Monday, June 13, 2022 12:37 p.m. - 12:42 p.m. |
format | Online Article Text |
id | pubmed-9625182 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Oxford University Press |
record_format | MEDLINE/PubMed |
spelling | pubmed-96251822022-11-14 RF26 | PSAT150 Growth Outcomes From the Phase 2 and Phase 3 Studies of Once Weekly Somatrogon vs Daily Genotropin in Pediatric Patients With Growth Hormone Deficiency: Comparisons With Published Literature and an International Growth Study Database Cara, Jose Carlsson, Martin Rosenfeld, Ron G Wajnrajch, Michael P Wang, Ronnie Zadik, Zvi J Endocr Soc Pediatric Endocrinology BACKGROUND: Somatrogon is a long-acting recombinant human growth hormone (hGH) currently in development as a once-weekly injectable treatment for children with growth hormone deficiency (GHD). In a phase 2 (NCT01592500) and a phase 3 (NCT02968004) study, patients received either once-weekly somatrogon or once-daily Genotropin. AIMS: Compare the phase 2 and 3 study results with growth data from published literature and a database of children treated with once-daily Genotropin. METHODS: In the 12-month main portion of the phase 2 study (004), patients were randomized to 1 of 3 once-weekly somatrogon doses (0.25, 0.48, and 0.66 mg/kg/week) or once-daily Genotropin (0.24 mg/kg/week). After the main portion of 004, patients continued into the open-label extension (OLE), consisting of an additional 12 months at the original somatrogon dose (Genotropin recipients were randomized to 1 of the 3 somatrogon dose regimens), after which all patients received somatrogon at 0.66 mg/kg/week. In the 12-month main portion of the phase 3 study (006), patients were randomized to once-weekly somatrogon (0.66 mg/kg/week) or once-daily Genotropin (0.24 mg/kg/week). After the main portion of 006, all patients received somatrogon (0.66 mg/kg/week) in an OLE. Four year growth data from 004 and 006 were pooled and analyzed, then compared with growth data from matched subsets of hGH-treated patients as reported by Ranke and Lindberg1 (Genotropin dose: 0.22-0.31 mg/kg/week) and Bakker et al,2 (hGH dose: most patients received 0.3 mg/kg/week) and with data from a matched cohort from the Pfizer International Growth Study Database (KIGS), in which patients received once-daily Genotropin (0.20-0.28 mg/kg/week). RESULTS: The combined mean height velocity (HV) at the end of the 12-month main portions of study 004 and 006 was 10.37 cm/year for somatrogon-treated patients. The Year 1 mean HV reported by Ranke and Lindberg for children with a chronological average-centered age of 7.5 years was 9.4 cm/year and 8.3 cm/year for children with severe and moderate GHD, respectively. The Year 1 mean HV reported by Bakker et al for children with idiopathic GHD aged 7.5 years at the beginning of hGH therapy was ∼10 cm/year (for males and females). The mean annual HVs during the OLE period were 9.37, 8.97, and 9.03 cm/year at OLE Year 1, 2 and 3 in somatrogon-treated patients, which were numerically greater than HVs of 7.09, 6.35, and 6.08 cm/year at the corresponding annual visit in the matched KIGS cohort (Genotropin dose: 0.20–0.28 mg/kg/week). CONCLUSIONS: Comparisons with published literature and the KIGS database indicate that children treated with once-weekly somatrogon (0.66 mg/kg/week) showed good growth, compared with children treated with once-daily hGH, strengthening the expectation that somatrogon-treated children are likely to achieve a satisfactory final adult height. REFERENCES: 1.Ranke and Lindberg. JCEM. 2010;95(3): 1229-1237. 2.Bakker, Frane, et al. JCEM. 2008;93(2): 352-357. Presentation: Saturday, June 11, 2022 1:00 p.m. - 3:00 p.m., Monday, June 13, 2022 12:37 p.m. - 12:42 p.m. Oxford University Press 2022-11-01 /pmc/articles/PMC9625182/ http://dx.doi.org/10.1210/jendso/bvac150.1338 Text en © The Author(s) 2022. Published by Oxford University Press on behalf of the Endocrine Society. https://creativecommons.org/licenses/by-nc-nd/4.0/This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs licence (https://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial reproduction and distribution of the work, in any medium, provided the original work is not altered or transformed in any way, and that the work is properly cited. For commercial re-use, please contact journals.permissions@oup.com |
spellingShingle | Pediatric Endocrinology Cara, Jose Carlsson, Martin Rosenfeld, Ron G Wajnrajch, Michael P Wang, Ronnie Zadik, Zvi RF26 | PSAT150 Growth Outcomes From the Phase 2 and Phase 3 Studies of Once Weekly Somatrogon vs Daily Genotropin in Pediatric Patients With Growth Hormone Deficiency: Comparisons With Published Literature and an International Growth Study Database |
title | RF26 | PSAT150 Growth Outcomes From the Phase 2 and Phase 3 Studies of Once Weekly Somatrogon vs Daily Genotropin in Pediatric Patients With Growth Hormone Deficiency: Comparisons With Published Literature and an International Growth Study Database |
title_full | RF26 | PSAT150 Growth Outcomes From the Phase 2 and Phase 3 Studies of Once Weekly Somatrogon vs Daily Genotropin in Pediatric Patients With Growth Hormone Deficiency: Comparisons With Published Literature and an International Growth Study Database |
title_fullStr | RF26 | PSAT150 Growth Outcomes From the Phase 2 and Phase 3 Studies of Once Weekly Somatrogon vs Daily Genotropin in Pediatric Patients With Growth Hormone Deficiency: Comparisons With Published Literature and an International Growth Study Database |
title_full_unstemmed | RF26 | PSAT150 Growth Outcomes From the Phase 2 and Phase 3 Studies of Once Weekly Somatrogon vs Daily Genotropin in Pediatric Patients With Growth Hormone Deficiency: Comparisons With Published Literature and an International Growth Study Database |
title_short | RF26 | PSAT150 Growth Outcomes From the Phase 2 and Phase 3 Studies of Once Weekly Somatrogon vs Daily Genotropin in Pediatric Patients With Growth Hormone Deficiency: Comparisons With Published Literature and an International Growth Study Database |
title_sort | rf26 | psat150 growth outcomes from the phase 2 and phase 3 studies of once weekly somatrogon vs daily genotropin in pediatric patients with growth hormone deficiency: comparisons with published literature and an international growth study database |
topic | Pediatric Endocrinology |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9625182/ http://dx.doi.org/10.1210/jendso/bvac150.1338 |
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