JP6896749B2 - 組換えhGHを含む、成長ホルモン欠乏を治療するための薬学組成物 - Google Patents
組換えhGHを含む、成長ホルモン欠乏を治療するための薬学組成物 Download PDFInfo
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- JP6896749B2 JP6896749B2 JP2018543675A JP2018543675A JP6896749B2 JP 6896749 B2 JP6896749 B2 JP 6896749B2 JP 2018543675 A JP2018543675 A JP 2018543675A JP 2018543675 A JP2018543675 A JP 2018543675A JP 6896749 B2 JP6896749 B2 JP 6896749B2
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Description
一態様において、本発明は以下を提供する。
[項目1]
組換えhGH GX‐H9および薬学的に許容可能な担体を含む成長ホルモン欠乏を治療するための薬学組成物であって、前記組換えhGHが、患者の体重kg当たり少なくとも0.1mgの投与量で、少なくとも1週間の間隔を伴って少なくとも1回投与される、成長ホルモン欠乏を治療するための薬学組成物。
[項目2]
前記組換えhGHは、患者の体重kg当たり0.1〜0.3mgの投与量で週1回投与されることを特徴とする項目1に記載の薬学組成物。
[項目3]
前記組換えhGHは、患者の体重kg当たり0.1〜0.2mgの投与量で週1回投与されることを特徴とする項目2に記載の薬学組成物。
[項目4]
前記組換えhGHタンパク質は、患者の体重kg当たり0.1〜0.4mgの投与量で2週1回投与されることを特徴とする項目1に記載の薬学組成物。
[項目5]
前記組換えhGHタンパク質は、患者の体重kg当たり0.15〜0.4mgの投与量で2週1回投与されることを特徴とする項目1に記載の薬学組成物。
[項目6]
前記組換えhGHタンパク質が、配列番号1のアミノ酸配列を含むことを特徴とする項目1〜5のいずれかに記載の薬学組成物。
[項目7]
皮下に投与されることを特徴とする項目1〜5のいずれか一項に記載の薬学組成物。
[項目8]
成長ホルモン欠乏の患者に組換えhGH、GX‐H9を患者の体重kg当たり少なくとも0.1mgの投与量で、少なくとも1週間の間隔を伴って1回投与するステップを含む、成長ホルモン欠乏を治療する方法。
[項目9]
成長ホルモン欠乏の患者に組換えhGH、GX‐H9を患者の体重kg当たり0.1〜0.3mgの投与量で週1回投与するステップを含む、項目8に記載の方法。
[項目10]
成長ホルモン欠乏の患者に組換えhGH、GX‐H9を患者の体重kg当たり0.1〜0.4mgの投与量で2週1回投与するステップを含む、項目8に記載の方法。
組換えhGHGX‐H9は、米国特許第8,529,899号に開示の方法により製造可能である。
GX‐H9のハイブリッドFc領域が、抗体依存性細胞媒介性細胞毒性(ADCC;antibody dependent cell mediated cytotoxicyty)および補体依存細胞毒性(CDC;complement dependent cytotoxicity)を誘発しないことを確認するために、酵素結合免疫測定法(ELISA)を行った。
3‐1:脳下垂体摘出ラットを用いた、GX‐H9の繰り返し皮下投与の効能試験
動物疾患モデルである脳下垂体摘出ラット(Hypophysectomized Rats)を用いてGX‐H9の効能を試験した。対照群として、1日1回投与製剤であるジェノトロピン(米国のPfizer社)を使用し、GX‐H9を週1回投与して効能を比較した。
GX‐H9の薬物動態を試験するために、ラットにGX‐H9を単回皮下投与した。対照群として、ユトロピン(Eutropin;韓国の(株)LGライフサイエンス)を単回皮下投与し、その効果を比較した。グループ1は、ユトロピン200μg/kgを単回皮下投与し、グループ2は、200μg/kgのGX‐H9を単回皮下投与した。グループ3は、1,000μg/kgのGX‐H9を単回皮下投与した。
サル(cynomolgus monkey)において、GX‐H9および対照物質であるユトロピンの薬物動態を解析した。雄サル(3匹/群)に、GX‐H9を500μg/kgおよび1000μg/kgの用量で週4回繰り返して皮下投与し、対照物質であるユトロピンを、1000μg/kgの用量で単回皮下投与した。
4‐1:健常な成人における組換えhGH(GX‐H9)の薬動学的特性
健常な志願者を対象として、無作為割付、二重盲検、プラセボ対照、単回投与、段階的増量の第I相臨床試験を行った。第I相臨床試験の目的は、GX‐H9を単回皮下投与した時の安全性、耐薬性、および薬動/薬力学的特性を評価することであった。健常な志願者を無作為に試験群またはプラセボ群に割付け、GX‐H9を4つの用量群(0.2、0.4、0.8、および1.6mg/kg)として単回皮下投与した後、合計56日間評価を行った。
GX‐H9を投与したグループは、単回投与前、並びに、投与12、24、36、48、60、72、96、144、312、480、648、1320時間後に採血した。投与前に採血して測定した血中のIGF‐1濃度を基底値(ベースライン)として変化量を図8に示した。
試験対象者で観察された治療副作用(treatment emergent adverse events)を、投与した薬物、薬物と異常反応の関連性、および治療副作用応の強度によって分析した結果を下記表2にまとめた。
5‐1:成人成長ホルモン欠乏症患者におけるGX‐H9の薬動学的特性
無作為割付、陽性対照薬の対照、公開臨床試験で、成人成長ホルモン欠乏症患者にGX‐H9を週1回または2週1回投薬した時の安全性、耐薬性、有効性、および薬動/薬力学的特性を評価するための第II相臨床試験を行った。投与用量は、0.1mg/kgずつ週1回(グループ1)、0.3mg/kgずつ2週1回(グループ2)、または0.2mg/kgずつ2週1回(グループ3)として、総12週間繰り返して投与した。また、陽性対照薬として、ジェノトロピンを6μg/kgずつ毎日投薬(グループ4)した。
GX‐H9を週1回投与したグループは、最初投与(1週)および最後投与(12週)の前、並びに、投与12、24、48、72、および168時間後に採血した。時間および用量によるIGF‐1の健常者に対する標準偏差スコア(standard deviation score、SDS)の変化を評価するために、第3、5、7、9、および11週の投与後4日間のIGF‐1のSDSを確認した。GX‐H9を2週1回投与したグループは、最初投与(1週)および最後投与(11週)の前、並びに、投与12、24、48、72、168、240、および336時間後に採血した。時間および用量によるIGF‐1のSDSの変化を評価するために、第3、5、7、および9週の投与後4日間のIGF‐1のSDSを確認した。
試験対象者で観察された副作用を、投与した薬物、および薬物と副作用の関連性によって分析した結果を下記表5にまとめた。
持続的な投与による薬理効果を確認するために、GX‐H9によって抗体形成が誘導されるかを検査した。1名の患者(サンプル1502‐001)の場合、臨床試験の開始前から抗体を有していたため、検査結果が陽性であった。また、投薬してから1日、32日、および106日目にもGX‐H9による数値増加は現れなかった。また、この患者の薬力学を検討した結果、IGF‐1数値が大きく増加することが確認された。これは、既存に存在する抗‐hGH抗体がGX‐H9の治療に関係ないことを示唆する。結論的に、GX‐H9の投与は全体患者で抗体反応を誘導しなかった。
2)特異性:阻害%は100x(1−(GX−H9添加サンプルの平均OD/非添加サンプルの平均OD))で定義される;>=17%の場合、サンプルのタイターが評価される。
3)タイター値:タイター値は、プレートのカットポイントODよりも大きいまたはこれと等しい平均ODを生じる繰り返し希釈回数であって、当該系列における更なる希釈は、カットポイントODよりも低い平均ODを生じる希釈回数によって定義される。
NA:反応性でないサンプル。更なる分析は不要である。
Claims (4)
- 組換えhGH GX‐H9および薬学的に許容可能な担体を含む成長ホルモン欠乏を治療するための薬学組成物であって、
前記組換えhGHは、ハイブリッドFcと融合したヒト成長ホルモンであり、
前記ハイブリッドFcは、IgDとIgG4が融合したものであり、
前記組換えhGHは、患者の体重kg当たり0.1〜0.3mgの投与量で週1回投与され、または、前記組換えhGHは、患者の体重kg当たり0.1〜0.4mgの投与量で2週1回投与され、
前記組換えhGHは、配列番号1のアミノ酸配列を含む、
成長ホルモン欠乏を治療するための薬学組成物。 - 前記組換えhGHは、患者の体重kg当たり0.1〜0.2mgの投与量で週1回投与されることを特徴とする請求項1に記載の薬学組成物。
- 前記組換えhGHは、患者の体重kg当たり0.15〜0.4mgの投与量で2週1回投与されることを特徴とする請求項1に記載の薬学組成物。
- 皮下に投与されることを特徴とする請求項1〜3のいずれか一項に記載の薬学組成物。
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PCT/KR2017/001726 WO2017142331A1 (en) | 2016-02-17 | 2017-02-16 | Pharmaceutical composition comprising recombinant hgh for the treatment of growth hormone deficiency |
KR10-2017-0021104 | 2017-02-16 | ||
KR1020170021104A KR20170096968A (ko) | 2016-02-17 | 2017-02-16 | hGH 융합단백질을 포함하는 성장호르몬 결핍을 치료하기 위한 약학 조성물 |
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