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Kildemoes RJ, Backeljauw PF, Højby M, Blair JC, Miller BS, Mori J, Lyauk YK. Model-Based Analysis of IGF-I Response, Dosing, and Monitoring for Once-Weekly Somapacitan in Children With GH Deficiency. J Endocr Soc 2023; 7:bvad115. [PMID: 37818403 PMCID: PMC10561011 DOI: 10.1210/jendso/bvad115] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Indexed: 10/12/2023] Open
Abstract
Context Growth hormone (GH) replacement therapy improves longitudinal growth and adult height in children with GH deficiency (GHD). GH stimulates insulin-like growth factor (IGF)-I release, the biomarker used for monitoring GH activity during treatment. Objective This study aims to provide model-based insights into the dose-IGF-I responses of once-weekly somapacitan, a novel long-acting GH, compared with daily GH in children with GHD. Methods Analyses included dosing information and 1473 pharmacokinetic samples from 210 somapacitan-treated pediatric patients with GHD across 3 trials, including phase 1 (NCT01973244), phase 2 (NCT02616562; REAL 3), and phase 3 (NCT03811535; REAL 4), as well as 1381 IGF-I samples from 186 patients with GHD treated with somapacitan in REAL 3 and REAL 4. Pharmacokinetic/pharmacodynamic modeling to characterize somapacitan dose-IGF-I response and predict the response to dosing day changes. Results Relationships were established between somapacitan dose, exposure, change from baseline IGF-I SD score (SDS), and height velocity (HV). A linear model permitted the development of a tool to calculate estimated average weekly IGF-I exposure from a single IGF-I sample obtained at any time within the somapacitan dosing interval at steady state. In practice, the use of this tool requires knowledge of somapacitan injection timing relative to IGF-I sample collection timing. IGF-I SDS simulations support flexible dosing day changes while maintaining at least 4 days between doses. Conclusion We characterized the dose-IGF-I response of somapacitan in children with GHD. To support physicians in IGF-I monitoring, we present a practical guide about expected weekly average IGF-I concentrations in these patients and provide insights on dosing day flexibility.
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Affiliation(s)
| | - Philippe F Backeljauw
- Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA
| | - Michael Højby
- Clinical Drug Development, Novo Nordisk A/S, Søborg 2860, Denmark
| | - Joanne C Blair
- Department of Endocrinology, Alder Hey Children's NHS Foundation Trust, Liverpool L14 5AB, UK
| | - Bradley S Miller
- Division of Pediatric Endocrinology, University of Minnesota Medical School, MHealth Fairview Masonic Children’s Hospital, Minneapolis, MN 55454, USA
| | - Jun Mori
- Division of Pediatric Endocrinology and Metabolism, Children's Medical Center, Osaka City General Hospital, Osaka, 534-0021, Japan
| | - Yassine K Lyauk
- Clinical Drug Development, Novo Nordisk A/S, Søborg 2860, Denmark
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Miller BS, Blair JC, Rasmussen MH, Maniatis A, Kildemoes RJ, Mori J, Polak M, Bang RB, Böttcher V, Stagi S, Horikawa R. Weekly Somapacitan is Effective and Well Tolerated in Children With GH Deficiency: The Randomized Phase 3 REAL4 Trial. J Clin Endocrinol Metab 2022; 107:3378-3388. [PMID: 36062966 PMCID: PMC9693810 DOI: 10.1210/clinem/dgac513] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Indexed: 11/19/2022]
Abstract
CONTEXT Somapacitan, a once-weekly reversible albumin-binding GH derivative, is evaluated in children with GH deficiency (GHD). OBJECTIVE To demonstrate efficacy and safety of somapacitan vs daily GH. METHODS REAL4 is a randomised, multinational, open-labeled, active-controlled parallel group phase 3 trial, comprising a 52-week main trial and 3-year extension (NCT03811535). SETTING Eighty-six sites across 20 countries. PATIENTS 200 treatment-naïve patients were randomized and exposed. INTERVENTIONS Patients were randomized 2:1 to somapacitan (0.16 mg/kg/wk) or daily GH (Norditropin; 0.034 mg/kg/d), administered subcutaneously. MAIN OUTCOME MEASURES The primary endpoint was annualized height velocity (HV; cm/y) at week 52. Additional assessments included HV SD score (SDS), height SDS, bone age, IGF-I SDS, patient-reported outcomes, and safety measures. RESULTS Estimated mean HV at week 52 was 11.2 and 11.7 cm/y for somapacitan and daily GH, respectively. Noninferiority was confirmed. Changes in HV SDS, height SDS, bone age, and IGF-I SDS from baseline to week 52 were similar between treatment groups. At week 52, mean IGF-I SDS values were similar between treatment groups and within normal range (-2 to +2). Safety of somapacitan was consistent with the well-known daily GH profile. Low proportions of injection-site reactions were reported for somapacitan (5.3%) and daily GH (5.9%). Both treatments similarly reduced disease burden from baseline to week 52, whereas a greater treatment burden reduction was observed for somapacitan. CONCLUSIONS Similar efficacy for somapacitan compared to daily GH was demonstrated over 52 weeks of treatment with comparable safety and mean IGF-I SDS levels in treatment-naïve children with GHD.
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Affiliation(s)
- Bradley S Miller
- Division of Pediatric Endocrinology, University of Minnesota Masonic Children's Hospital, Minneapolis, MN 55454, USA
| | - Joanne C Blair
- Department of Endocrinology, Alder Hey Children's NHS Foundation Trust, Liverpool, L14 5AB, UK
| | - Michael Højby Rasmussen
- Correspondence: Michael Højby Rasmussen, MD, PhD, MSc, Novo Nordisk A/S, 2860 Søborg, Denmark.
| | | | | | - Jun Mori
- Division of Pediatric Endocrinology and Metabolism, Children’s Medical Center, Osaka City General Hospital, Osaka 534-0021, Japan
| | - Michel Polak
- Service d’Endocrinologie, Gynécologie et Diabétologie Pédiatriques, Hôpital Universitaire Necker Enfants Malades Paris, Assistance Publique-Hôpitaux de Paris, Paris 75015, France
| | | | - Volker Böttcher
- Division of Pediatric Endocrinology and Metabolism, MVZ Endokrinologikum Frankfurt am Main, Frankfurt 60596, Germany
| | - Stefano Stagi
- Department of Health Sciences, University of Florence, Anna Meyer Children's University Hospital, Florence 50139, Italy
| | - Reiko Horikawa
- Division of Endocrinology and Metabolism, National Center for Child Health and Development, Tokyo 157-0074, Japan
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Jiang Z, Chen X, Dong G, Lou Y, Zhang J, Cheng X, Pan J, Liao W, Wu J, Huang X, Jin X, Liu D, Zeng T, Zhu S, Dong Q, Luo X, Lan D, Cao L, Zhang X, Liu J, Dai M, Zhang M, Liu L, Dong J, Zhao D, Ni S, Fu J. Short-term efficacy and safety of a lower dose of polyethylene glycol recombinant human growth hormone in children with growth hormone deficiency: A randomized, dose-comparison study. Front Pharmacol 2022; 13:955809. [PMID: 36034802 PMCID: PMC9402941 DOI: 10.3389/fphar.2022.955809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Accepted: 07/13/2022] [Indexed: 11/13/2022] Open
Abstract
Objective: Polyethylene glycol recombinant human growth hormone (PEG-rhGH, Jintrolong®) is the first long-acting rhGH preparation that is approved to treat children with growth hormone deficiency (GHD) in China. Clinical experience with dose selections of PEG-rhGH is scarce. The present study compared the efficacy and safety of a lower dose to increase dosing regimens of PEG-rhGH treatment. Methods: A multicenter, randomized, open-label, dose-comparison clinical study was conducted to compare the improvements in the height standard deviation score (Ht SDS), height velocity (HV), insulin-like growth factor-1 (IGF-1) SDS, and safety profiles of children with GHD who are treated with 0.2 mg/kg/week of PEG-rhGH dose or 0.14 mg/kg/week for 26 weeks. Results: Ht SDS, HV, and IGF-1 SDS increased significantly after PEG-rhGH treatment in the two dose groups (p < 0.05). The improvements of Ht SDS, HV, and IGF-1 SDS were more significant in the high-dose group than in the low-dose group (p < 0.05). Ht SDS improvement in low-dose group was not non-inferiority to that in the high-dose group (p = 0.2987). The incidences of adverse events were comparable between the two groups. Conclusion: The improvements of Ht SDS, HV, and IGF-1 SDS were more significant in the high-dose group than in the low-dose group (p < 0.05). PEG-rhGH at the dose of 0.14 mg/kg/week was effective and safe for children with GHD. Clinical Trial Registration:clinicaltrials.gov, identifier NCT02908958.
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Affiliation(s)
- Zhouhong Jiang
- Department of Pharmacy, The Children’s Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China
| | - Xuefeng Chen
- Department of Endocrinology, The Children’s Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China
| | - Guanping Dong
- Department of Endocrinology, The Children’s Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China
| | - Yin Lou
- Department of Pharmacy, The Children’s Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China
| | - Jianping Zhang
- Department of Pediatrics, Ningbo Women’s and Children’s Hospital, Ningbo, China
| | - Xinran Cheng
- Department of Pediatric Endocrine Genetics and Metabolism, Chengdu Women’s and Children’s Center Hospital, Chengdu, China
| | - Jiayan Pan
- Department of Pediatrics, Wuhu First People’s Hospital, Wuhu, China
| | - Wei Liao
- Department of Pediatrics, First Affiliated Hospital of Army Medical University (Third Military Medical University), Chongqing, China
| | - Jinzhun Wu
- Department of Pediatrics, The First Affiliated Hospital of Xiamen University, Xiamen, China
| | - Xiaodong Huang
- Department of Endocrinology and Genetics, Shanghai Children’s Medical Center, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Xianjiang Jin
- Department of Genetics and Endocrinology, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Wenzhou, China
| | - Deyun Liu
- Department of Pediatrics, The Second Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Ting Zeng
- Department of Child Health Care, Liuzhou Maternity and Child Healthcare Hospital, Liuzhou, China
| | - Shunye Zhu
- Department of Pediatrics, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Qin Dong
- Department of Pediatrics, Zhejiang Provincial Hospital of Chinese Medicine, Hangzhou, China
| | - Xiaoming Luo
- Department of Pediatrics, Zhejiang Provincial People’s Hospital, People’s Hospital of Hangzhou Medical College, Hangzhou, China
| | - Dan Lan
- Department of Pediatrics, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Lizhi Cao
- Department of Pediatrics, Xiangya Hospital, Central South University, Changsha, China
| | - Xingxing Zhang
- Department of Pediatrics, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Jing Liu
- Department of Pediatrics, Changchun Children’s Hospital, Changchun, China
| | - Mingjuan Dai
- Department of Pediatrics, Hangzhou First People’s Hospital, Hangzhou, China
| | - Manyan Zhang
- Department of Pediatrics, Shaoxing Second Hospital, Shaoxing, China
| | - Li Liu
- Department of Genetics and Endocrinology, Guangzhou Women and Children’s Medical Center, Guangzhou, China
| | - Junhua Dong
- Department of Pediatrics, Qilu Hospital of Shandong University, Jinan, China
| | - Dongmei Zhao
- Pediatric Research Institute, Qilu Children’s Hospital of Shandong University, Jinan, China
| | - Shaoqing Ni
- National Clinical Trial Institute, The Children’s Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China
- Research Center for Clinical Pharmacy, Zhejiang University, Hangzhou, China
- *Correspondence: Junfen Fu, ; Shaoqing Ni,
| | - Junfen Fu
- Department of Endocrinology, The Children’s Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China
- The Children’s Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China
- *Correspondence: Junfen Fu, ; Shaoqing Ni,
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Gao X, Chen J, Cao B, Dou X, Peng Y, Su C, Qin M, Wei L, Fan L, Zhang B, Gong C. First Clinical Study on Long-Acting Growth Hormone Therapy in Children with Turner Sydrome. Horm Metab Res 2022; 54:389-395. [PMID: 35504300 PMCID: PMC9192150 DOI: 10.1055/a-1842-0724] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Study on long-acting growth hormone (LAGH) therapy in Turner syndrome (TS) is a 2-year retrospective study including patients diagnosed with TS from 2018-2021. Patients were divided into four groups: Group 1 to 4 were low dose (0.1 mg/kg/ w), high-dose (0.2 mg/kg/w) LAGH, daily GH (0.38 mg/kg/w), and untreated control. The efficacy and safety data were analyzed. Seventy-five TS cases with the age 7.9±2.9 years and the bone age 6.8±2.8 years were recruited. In year 1: The change of height standard deviation score (ΔHtSDS) and height velocity (HV) in Group 2 were comparable to Group 3, both two groups were higher than Group 1. ΔHtSDS and HV in all GH treatment group were higher than untreated group. IGF1 increased in all treatment groups, only 4 cases had IGF1>3 SD. In year 2: ΔHtSDS and HV in Group 2 and 3 were comparable. Five cases had IGF1>3 SD. Correlation analysis for LAGH efficacy at year 1 indicated that baseline variables correlated with ΔHtSDS include: GH dose, CA (chronological age), and bone age (BA). The HV was positively correlated with baseline GH dose, HtSDS, IGF-1SDS and negatively correlated with baseline CA, BA, and BMI. No GH-related serious adverse effects were observed. The high-dose LAGH treatment in TS patients is effective and safe as daily GH for 2 years. The favorable prognosis factors include sufficient GH dose and early treatment. IGF1 monitoring and weight control are important.
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Affiliation(s)
- Xinying Gao
- Department of Endocrinology, Genetics and Metabolism, Beijing
Children’s Hospital, Capital Medical University, National Center for
Children’s Health, Beijing, China
- Department of pediatrics, Beijing Liangxiang Hospital, Beijing,
China
| | - Jiajia Chen
- Department of Endocrinology, Genetics and Metabolism, Beijing
Children’s Hospital, Capital Medical University, National Center for
Children’s Health, Beijing, China
| | - Bingyan Cao
- Department of Endocrinology, Genetics and Metabolism, Beijing
Children’s Hospital, Capital Medical University, National Center for
Children’s Health, Beijing, China
| | - Xinyu Dou
- Department of Endocrinology, Genetics and Metabolism, Beijing
Children’s Hospital, Capital Medical University, National Center for
Children’s Health, Beijing, China
| | - Yaguang Peng
- Center for Clinical Epidemiology and Evidence-based Medicine, Beijing
Children’s Hospital, Capital Medical University, National Center for
Children’s Health, Beijing, China
| | - Chang Su
- Department of Endocrinology, Genetics and Metabolism, Beijing
Children’s Hospital, Capital Medical University, National Center for
Children’s Health, Beijing, China
| | - Miao Qin
- Department of Endocrinology, Genetics and Metabolism, Beijing
Children’s Hospital, Capital Medical University, National Center for
Children’s Health, Beijing, China
| | - Liya Wei
- Department of Endocrinology, Genetics and Metabolism, Beijing
Children’s Hospital, Capital Medical University, National Center for
Children’s Health, Beijing, China
| | - Lijun Fan
- Department of Endocrinology, Genetics and Metabolism, Beijing
Children’s Hospital, Capital Medical University, National Center for
Children’s Health, Beijing, China
| | - Beibei Zhang
- Department of Endocrinology, Genetics and Metabolism, Beijing
Children’s Hospital, Capital Medical University, National Center for
Children’s Health, Beijing, China
| | - Chunxiu Gong
- Department of Endocrinology, Genetics and Metabolism, Beijing
Children’s Hospital, Capital Medical University, National Center for
Children’s Health, Beijing, China
- Correspondence Prof. Chunxiu
Gong Beijing Children’s Hospital, Capital
Medical University, National Center for Children’s Health,
Department of Endocrinology, Genetics and
MetabolismBeijingChina+008613370115001+010-59616385
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