JP2022506860A - ろ過可能なデュオカルマイシン含有抗体薬物複合体組成物及び関連する方法 - Google Patents
ろ過可能なデュオカルマイシン含有抗体薬物複合体組成物及び関連する方法 Download PDFInfo
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Abstract
Description
Ab-(L-D)m (I)
(式中、Abは抗体又はその抗原結合断片であり、L-Dはデュオカルマイシン リンカー-薬物であり、mは1~12の平均DARを表す)
で示される抗体薬物複合体、及び、場合によっては、(d) 複合体を形成していないデュオカルマイシン リンカー-薬物を含む組成物であって、
前記組成物は、30%~60%(v/v)のアセトニトリル、好ましくは35%~55%のアセトニトリルを含む、組成物に関する。
Ab-(L-D)m (I)
(式中、Abは抗体又はその抗原結合断片であり、L-Dはデュオカルマイシン リンカー-薬物であり、mは1~12の平均DARを表す)
で示される抗体薬物複合体、及び、場合によって複合体を形成していないデュオカルマイシン リンカー-薬物をさらに含む水溶液又は凍結乾燥物と、(ii) 水、アセトニトリル及び酸を含む希釈媒体を組み合わせて組成物を形成することを含む方法であって、前記組成物は、アセトニトリルを30%~60%(v/v)、好ましくは35%~55%含む、方法に関する。
1) 抗体薬物複合体のバッチから試料を得ること、ここで、前記バッチは、デュオカルマイシン リンカー-薬物と複合体を形成した抗体、及び、場合によっては複合体を形成していないデュオカルマイシン リンカー-薬物を含み;
2) 前記試料を、水、アセトニトリル及び酸を含む希釈媒体と組み合わせて、アセトニトリルを30%~60%(v/v)、好ましくは35%~55%を含むろ過可能な組成物を形成すること;
3) 前記ろ過可能な組成物をろ過し、前記抗体薬物複合体を実質的に含まないろ液を得ること;
4) 前記ろ液を分析し、前記ろ液中の前記複合体を形成していないデュオカルマイシン リンカー-薬物の量が前もって定めた値を下回るかどうかを確認すること;そして
5) 前記複合体を形成していないデュオカルマイシン リンカー-薬物が前記前もって定めた値を下回る場合、前記抗体薬物複合体のバッチを販売許可/承認すること
を含む方法に関する。
Ab-(L-D)m (I)
(式中、Abは抗体又はその抗原結合断片であり、L-Dはデュオカルマイシン リンカー-薬物であり、mは1~12の平均薬物抗体比(DAR)を表す)
で示される抗体薬物複合体、及び、場合によっては、(d) 複合体を形成していないデュオカルマイシン リンカー-薬物を含む組成物であって、前記組成物は、アセトニトリルを30%~60%(v/v)、好ましくは35%~55%含む組成物に関する。
R1、R2及びR3は独立して、H、OH、SH、NH2、N3、NO2、NO、CF3、CN、C(O)NH2、C(O)H、C(O)OH、ハロゲン、Ra、SRa、S(O)Ra、S(O)2Ra、S(O)ORa、S(O)2ORa、OS(O)Ra、OS(O)2Ra、OS(O)ORa、OS(O)2ORa、ORa、NHRa、N(Ra)Rb、+N(Ra)(Rb)Rc、P(O)(ORa)(ORb)、OP(O)(ORa)(ORb)、SiRaRbRc、C(O)Ra、C(O)ORa、C(O)N(Ra)Rb、OC(O)Ra、OC(O)ORa、OC(O)N(Ra)Rb、N(Ra)C(O)Rb、N(Ra)C(O)ORb、N(Ra)C(O)N(Rb)Rc及び水溶性基からなる群から選択され、
Ra、Rb及びRcは独立して、H及び任意に置換された(CH2CH2O)aaCH2CH2X1Ra1、C1-15アルキル、C1-15ヘテロアルキル、C3-15シクロアルキル、C1-15ヘテロシクロアルキル、C5-15アリール又はC1-15ヘテロアリールからなる群から選択され、
aaは1~1000であり、X1は、O、S及びNRb1から選択され、Rb1及びRa1は独立して、H及びC1-3アルキルから選択され、
Ra、Rb及び/又はRcの1つ以上の置換基は、水溶性基であってもよく、Ra、Rb及びRcの2つ以上は結合して、1つ以上の置換された炭素環及び/又は複素環を形成してもよい)
のいずれかで示されることが好ましい。
X5は、-Cl、-Br、-I、-F、-OH、-O-N-スクシンイミド、-O-(4-ニトロフェニル)、-O-ペンタフルオロフェニル、-O-テトラフルオロフェニル、-O-C(O)-R4及び-O-C(O)-OR4から選択され、
X6は、-Cl、-Br、-I、-O-メシル、-O-トリフリル及び-O-トシルから選択され、
R4は、分岐又は非分岐のC1~C10アルキル又はアリールである)
である。
nは0~3であり、
R5は
yは1~16であり
R6は
V1は、条件付きで切断可能であるか又は条件付きで変換可能な部分であって、化学的、光化学的、物理的、生物学的又は酵素的な方法で切断又は変換することができ、Zはデュオカルマイシン誘導体であり、nは0、1、2又は3であり、pは0又は1である)
(i) 式(I):
Ab-(L-D)m (I)
で示されるADC、及び、場合によっては対応する複合体を形成していないデュオカルマイシン リンカー-薬物をさらに含む水溶液(又は凍結乾燥物)を、(ii) 水、アセトニトリル及び酸を含む希釈媒体と組み合わせて、30%~60%(v/v)、好ましくは35%~55%のアセトニトリルを含む本発明のろ過可能な組成物を形成することを含む方法に関する。
1) ADCのバッチから試料を得ること、ここで、前記バッチは、デュオカルマイシン リンカー-薬物と複合体を形成した抗体、及び、場合によっては複合体を形成していないデュオカルマイシン リンカー-薬物を含み;
2) 前記試料を、水、アセトニトリル及び酸を含む希釈媒体と組み合わせて、アセトニトリルを30%~60%(v/v)、好ましくはアセトニトリルを35%~55%含むろ過可能な組成物を形成すること;
3) 前記ろ過可能な組成物をろ過し、前記ADCを実質的に含まないろ液を得ること;
4) 前記ろ液を分析し、前記ろ液中の前記複合体を形成していないデュオカルマイシン リンカー-薬物の量が前もって定めた値を下回るかどうかを確認すること;そして
5) 前記複合体を形成していないデュオカルマイシン リンカー-薬物が前記前もって定めた値を下回る場合、前記ADCのバッチを販売許可/承認すること
を含む方法に関する。
トラスツズマブ デュオカルマジン(SYD985)及びリンカー-薬物であるvc-seco-DUBA(SYD980)は、国際公開第2011/133039号に記載されている材料及び方法を使用して得た。試薬、溶媒及び緩衝液は、市販のものを使用した。
デュオカルマイシン含有ADC(10mg/mL)及びおそらく複合体を形成していないデュオカルマイシン リンカー-薬物を含む試料100μLをピペットで採取し、10Kフィルター(ナノセップ(登録商標)オメガ遠心ろ過デバイス)を備えた容器に入れた。0.13%のギ酸とミリQ水中の53%のアセトニトリルの溶液を含む希釈媒体300μLを前記容器に加えた。試料と希釈媒体をフィルター上で(例えばボルテックスを使用して)均質化し、14,000gで15分間遠心分離し、ろ液を(例えばボルテックスを使用して)均質化し、HPLC用バイアルに移した。
試料中の複合体を形成していないデュオカルマイシン リンカー-薬物の濃度の計算に外部標準試料を使用した。外部標準試料は複合体を形成していないデュオカルマイシン リンカー-薬物0.25μg/mLを使用して調製した。
分析のために、10μLのHPLC用バイアル中の試料又はブランクを、イソブチル側鎖を有しTMSエンドキャッピングを備えたオクタデシル(C18)誘導シリカの逆相超高速液体クロマトグラフィー(RP-UPLC)カラム(Kinetex 1.7μm、XB-C18 100Å、100×2.1mm、Phenomenex)に、流速0.5mL/分、カラム温度45℃で注入した。溶出方法を以下の表1に示す。移動相Aの組成はミリQ水中の0.1%ギ酸で、移動相Bの組成はアセトニトリル/メタノール 50/50v/v中の0.1%ギ酸である。10mmの分析セル付きUV検出器を備えた逆相超高性能液体クロマトグラフィー(UPLC)を使用した。325nmの吸光度を測定した。Waters Empowerソフトウェアで、ピーク面積を決定した。数式(VI):
複合体を形成していないデュオカルマイシン リンカー-薬物であるvc-seco-DUBA(SYD980)(0.25μg/mL)をRP-UPLC法で分析した。そのクロマトグラムを図1に示す。図1は、6.205分に複合体を形成していないデュオカルマイシン リンカー-薬物(vc-seco-DUBA)の明確なピークを示す。
トラスツズマブ デュオカルマジンのバッチから得た試料を上述の試料調製法に従って処理し、RP-UPLC法で分析した。得られたクロマトグラムは、複合体を形成していないリンカー-薬物であるvc-seco-DUBAの存在を示さなかった。得られたクロマトグラムを図2に示すが、6.2分付近にピークは存在しない。分析の結果は、試料中の遊離のデュオカルマイシン リンカー-薬物の量は検出限界を下回り、したがって前もって定めた値(すなわち、合格/不合格検出試験)を下回ったことを示した。したがって、バッチの販売許可/承認は適切であった。
トラスツズマブ デュオカルマジン(10mg/mL)及びvc-seco-DUBA(0.25μg/mL)を含む試料100μLを10Kフィルター(ナノセップ(登録商標)オメガ遠心ろ過デバイス)を備えた容器に入れた。異なる比率の水、アセトニトリル(ACN)又はメタノール(MeOH)と、さまざまな割合の酸(ギ酸、トリフルオロ酢酸(TFA)又は塩酸)を含む希釈媒体(300μL)を前記容器に加えた。試料と希釈媒体をフィルター上で均質化し、14,000gで15分間遠心分離した。ろ液を均質化し、HPLC用バイアルに移した。ろ液中のvc-seco-DUBA(SYD980、すなわち、複合体を形成していないデュオカルマイシン リンカー-薬物)の量を、表1に示すグラジエントプログラムを使用してRP-UPLC-UVで検出し、数式(VI)を使用して定量した。結果を表2にまとめる。
Claims (15)
- (a) 水及びアセトニトリルを含む溶媒、
(b) 酸、
(c) 式(I):
Ab-(L-D)m (I)
(式中、Abは抗体又はその抗原結合断片であり、L-Dはデュオカルマイシン リンカー-薬物であり、mは1~12の平均DARを表す)
で示される抗体薬物複合体、及び、
場合によっては、(d) 複合体を形成していないデュオカルマイシン リンカー-薬物
を含む組成物であって、
前記組成物は、前記アセトニトリルを30%~60%(v/v)、好ましくは35%~55%含む、組成物。 - 前記組成物は、複合体を形成していないデュオカルマイシン リンカー-薬物をさらに含む、請求項1に記載の組成物。
- 前記抗体薬物複合体の濃度は、0.1~100mg/ml、好ましくは0.5~50mg/ml、より好ましくは1.0~10mg/mlである、請求項1又は2に記載の組成物。
- 前記酸の濃度は、0.01%~5%(v/v)、好ましくは0.05%~2%、より好ましくは0.05%~1.5%、最も好ましくは0.1%~1%である、請求項1~3のいずれか一項に記載の組成物。
- 前記酸は、トリフルオロ酢酸、ギ酸及び塩酸からなる群から選択される、請求項1~4のいずれか一項に記載の組成物。
- 前記AbはIgG抗体又はその抗原結合断片である、請求項1~7のいずれか一項に記載の組成物。
- (i) 式(I):
Ab-(L-D)m (I)
(式中、Abは抗体又はその抗原結合断片であり、L-Dはデュオカルマイシン リンカー-薬物であり、mは1~12の平均DARを表す)
で示される抗体薬物複合体、及び、場合によって複合体を形成していない前記デュオカルマイシン リンカー-薬物をさらに含む水溶液又は凍結乾燥物と、(ii) 水、アセトニトリル及び酸を含む希釈媒体を組み合わせて、組成物を形成することを含む方法であって、
前記組成物は、前記アセトニトリルを30%~60%(v/v)、好ましくは35%~55%含む、方法。 - さらに、前記組成物を分子量カットオフが3kDa~50kDaのフィルターでろ過し、前記抗体薬物複合体を実質的に含まないろ液を形成することを含む、請求項9に記載の方法。
- 前記ろ過は遠心ろ過である、請求項10に記載の方法。
- 前記フィルターは、修飾ポリエーテルスルホン、好ましくはナノセップ(登録商標)オメガフィルターを含む、請求項11に記載の方法。
- 前記ろ液中に前記複合体を形成していないデュオカルマイシン リンカー-薬物が存在するのであれば、さらに、前記ろ液に対して、前記複合体を形成していないデュオカルマイシン リンカー-薬物を単離してその量を測定するのに適したクロマトグラフィー分離を行うことを含む、請求項10~12のいずれか一項に記載の方法。
- 抗体薬物複合体のバッチを販売許可/承認する方法であって、
1) 抗体薬物複合体のバッチから試料を得ること、ここで、前記バッチは、デュオカルマイシン リンカー-薬物と複合体を形成した抗体、及び、場合によっては複合体を形成していないデュオカルマイシン リンカー-薬物を含み;
2) 前記試料を、水、アセトニトリル及び酸を含む希釈媒体と組み合わせて、前記アセトニトリルを30%~60%(v/v)、好ましくは35%~55%含むろ過可能な組成物を形成すること;
3) 前記ろ過可能な組成物をろ過し、前記抗体薬物複合体を実質的に含まないろ液を得ること;
4) 前記ろ液を分析し、前記ろ液中の前記複合体を形成していないデュオカルマイシン リンカー-薬物の量が前もって定めた値を下回るかどうかを確認すること;そして
5) 前記複合体を形成していないデュオカルマイシン リンカー-薬物が前記前もって定めた値を下回る場合、前記抗体薬物複合体のバッチを販売許可/承認すること
を含む方法。 - 前記前もって定めた値が、前記試料中、抗体薬物複合体1mgに対してデュオカルマイシン リンカー-薬物0.2μg以下に相当する、請求項14に記載の方法。
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