JP2022512589A - Gm1ガングリオシドーシスの治療に有用な組成物 - Google Patents
Gm1ガングリオシドーシスの治療に有用な組成物 Download PDFInfo
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Abstract
Description
出願人は、本明細書に電子形態で出願された配列表の資料を、参照により本明細書に組み込む。このファイルは、2019年8月29日付けの「18-8537PCT_SequenceListing_ST25.txt」とラベルされ、サイズが144,703バイトである。
GM1ガングリオシドーシス(すなわち、GM1)は、臨床表現型に基づいて3つのタイプに分類することができる:(1)出生から6ヶ月までの発症を伴う1型または乳児型:筋緊張低下、重度の中枢神経系(CNS)の変性を伴って急速に進行し、1~2歳までに死亡する、(2)7ヶ月から3歳までの発症を伴う2型後期乳児型または若年型:運動および認知発達の遅れ、およびより遅い進行、ならびに(3)後期発症を伴う3型成人型または慢性異型(3~30歳):尾状核におけるスフィンゴ糖脂質の局所沈着に起因する進行性錐体外路障害(Brunetti-Pierri and Scaglia,2008.GM1 gangliosidosis: Review of clinical,molecular,and therapeutic aspects,Molecular Genetics and Metabolism,94: 391-96)。6ヶ月齢以前に症状が発症した乳児GM1対象は、運動障害および認知障害の両方の迅速かつ予測可能な進行を一様に示す。患者の大部分は、生後数年以内に死亡する(生存期間の中央値は46ヶ月、Jarnes Utz et al.,2017)。共通の基礎となる病態生理にもかかわらず、成人型(3型)のGM1表現型は可変であり、疾患の経過は顕著に軽度である。3型GM1の患者のほとんどは、最初に小児後期に神経学的症状を発症し、その後の成人期における進行はほとんど見られない。
配列番号2の番号付けに基づいて、AAVhu68(以前はAAV3G2と称されていた)は、vp1の67位および157位の2つのコード化されたアミノ酸によって、別の系統群FのウイルスAAV9と異なる。対照的に、他の系統群FのAAV(AAV9、hu31、hu31)は、67位にAlaおよび157位にAlaを有する。新規のAAVhu68カプシドおよび/または操作されたAAVカプシドが提供され、配列番号2の番号付けに基づいて157位にバリン(ValまたはV)を有し、任意選択的に、配列番号2の番号付けに基づいて67位にグルタミン酸(GluまたはE)を有する。
例えば、vp1タンパク質の「亜集団」は、別途指定されない限り、組み立てられたAAVカプシド中の少なくとも1つの(1)vp1タンパク質であり、すべてのvp1タンパク質未満である。vp3タンパク質の「亜集団」は、別途指定されない限り、組み立てられたAAVカプシド中のすべてのvp3タンパク質よりも少ない1つ(1)vp3タンパク質であり得る。例えば、vp1タンパク質は、vpタンパク質の亜集団であり得、vp2タンパク質は、vpタンパク質の別個の亜集団であり得、vp3は、組み立てられたAAVカプシド中のvpタンパク質のさらなる亜集団であり得る。別の例では、vp1、vp2、およびvp3タンパク質は、例えば、少なくとも1つ、2つ、3つ、または4つの高度脱アミド化アスパラギン、例えば、アスパラギン-グリシン対で異なる修飾を有する亜集団を含み得る。
組換えアデノ随伴ウイルス(rAAV)は、遺伝子送達に好適なビヒクルとして記載されている。典型的には、rAAVによる送達のための導入遺伝子(例えば、GLB1遺伝子)を含む外因性発現カセットは、天然AAV源由来の機能的rep遺伝子およびcap遺伝子を置き換え、複製不能なベクターをもたらす。これらrepおよびcapの機能は、ベクター産生システム中にトランスで提供されるが、最終rAAV中には存在しない。
AAVウイルスベクター(例えば、組換え(r)AAV)の産生における使用のために、ベクターゲノムは、パッケージング宿主細胞に送達される任意の好適なベクター、例えば、プラスミドに担持され得る。本発明において有用なプラスミドは、とりわけ、原核細胞、昆虫細胞、哺乳類細胞におけるインビトロでの複製およびパッケージングに適しているように操作され得る。好適なトランスフェクション技術およびパッケージ宿主細胞は、既知であり、かつ/または当業者によって容易に設計することができる。例示的な産生プロセスは、図12A~12Bに提供される。
本明細書では、少なくとも1つのrAAVストック(例えば、rAAVhu68ストックまたは変異体rAAVhu68ストック)および任意選択的な担体、賦形剤および/または防腐剤を含む組成物を提供する。rAAVストックは、同じである複数のrAAVを指し、例えば、濃度および用量単位の考察において以下に記載される量である。
塩化ナトリウム、USP 73mg
重炭酸ナトリウム、USP 19mg
デキストロース、USP 8mg
硫酸マグネシウム・7H2O、USP 3mg
塩化カリウム、USP 3mg
塩化カルシウム・2H2O、USP 2mg
リン酸ナトリウム、二塩基性・7H2O、USP 2mg
水(注入用)、USP 10mL適量
電解質の濃度:
ナトリウム 149mEq/リットル
重炭酸 22.6mEq/L
カリウム 4.0mEq/リットル
塩素 132mEq/リットル
カルシウム 2.7mEq/リットル
硫酸 2.4mEq/リットル
マグネシウム 2.4mEq/リットル
リン酸 1.5mEq/リットル
一態様では、本明細書に提供されるrAAVまたは組成物は、この節で提供され、かつWO2018/160582(参照により本明細書に組み込まれる)に記載される方法および/またはデバイスを介して髄腔内投与され得る。代替的には、他のデバイスおよび方法が選択され得る。
AAVhu68を修飾について分析した。簡潔に、AAVhu68は、この研究に関連していないベクターゲノムを使用して産生され、各々は、293細胞における従来の三重トランスフェクション方法を使用して産生された。これらの技術の一般的な説明については、例えば、ell CL,et al.,The AAV9 receptor and its modification to improve in vivo lung gene transfer in mice.J Clin Invest.2011;121:2427-2435を参照されたい。簡潔には、例えば、AAV2逆位末端反復に隣接するパッケージ化される配列をコードするプラスミド(ニワトリβ-アクチンプロモーターから発現される導入遺伝子、イントロン、およびサルウイルス40(SV40)後期遺伝子に由来するポリA)を、AAV2 rep遺伝子およびAAVhu68 cap遺伝子をコードするプラスミドと、アデノウイルスヘルパープラスミド(pAdΔF6)とを用いたHEK293細胞の三重トランスフェクションによってパッケージした。得られたAAVウイルス粒子は、CsCl勾配遠心分離を使用して精製し、濃縮し、後で使用するために凍結することができる。
ベクターは、AAV2逆位末端反復に隣接するサイトメガロウイルスエンハンサー(CB7)[配列番号10]、ヒト伸長開始因子1αプロモーター(EF1a)[配列番号11]、またはヒトユビキチンCプロモーター(UbC)[配列番号9](1229bp、GenBank#D63791.1)]を有するニワトリβアクチンプロモーターから発現されるヒトGLB1のコード配列を含有するシスプラスミドから構築される。ヒトGLB1の様々なコード配列[配列番号4のaa配列]が構築される。野生型配列は、配列番号5で再現される。様々な操作されたGLB1コード配列を生成し、配列番号6、7、または8に提供される。
・逆位末端反復(Inverted Terminal Repeat、ITR):ITRは、同一の逆相補配列であり、ベクターゲノムの全ての成分に隣接するAAV2(130bp、GenBank#NC001401)に由来する。ITR配列は、AAVおよびアデノウイルスヘルパー機能がトランスで提供される場合、ベクターDNA複製の起点およびベクターゲノムのパッケージングシグナルの両方として機能する。したがって、ITR配列は、ベクターゲノム複製およびパッケージングに必要な唯一のシス配列を表す。
・プロモーター:ヒトユビキチンC(UbC)プロモーターに由来する調節エレメント:この遍在性プロモーター(1229bp、GenBank#D63791.1)を選択して、任意のCNS細胞型における導入遺伝子の発現を駆動した。
・コード配列:GLB1遺伝子は、β-ガラクトシダーゼをコードし、最大化されたヒトコドン使用に基づく。GLB1酵素は、ガングリオシドからのβ結合ガラクトースの加水分解を触媒する(2034bp、677aa,Genbank#AAA51819.1、EC3.2.1.23)。
・キメライントロン(chimeric intron、CI)-ヒトβ-グロビンスプライスドナーおよび免疫グロブリンG(IgG)スプライスアクセプター要素からなるハイブリッドイントロン
・SV40ポリアデニル化シグナル(239bp、Genbank#KP659662.1):SV40ポリアデニル化シグナルは、cisで遺伝子のmRNAの効率的なポリアデニル化を促進する。この要素は、転写終結、新生転写物の3’末端における特異的切断事象、および長鎖ポリアデニル尾部の添加のためのシグナルとして機能する。
AAV2/hu68トランスプラスミドpAAV2/hu68.KanRは、ペンシルベニア大学のDr.James M.Wilsonの研究室内で構築された。AAV2/hu68トランスプラスミドは、AAVベクターゲノムの複製およびパッケージングに必要とされる4つの野生型(WT)AAV2レプリカーゼ(Rep)タンパク質をコードする。また、AAV2/hu68トランスプラスミドは、AAVベクターゲノムを収容するためにAAV血清型hu68のビリオンシェルに組み立てる3つのWT AAVhu68ビリオンタンパク質カプシド(Cap)タンパク質をコードする。AAVhu68配列は、ヒト心臓組織DNAから入手した。
プラスミドpAdDeltaF6(KanR)は、サイズが15,774bpである。このプラスミドには、AAV複製に重要なアデノウイルスゲノムの領域、すなわちE2A、E4、およびVA RNAが含まれている(アデノウイルスE1機能は、HEK293細胞によって提供される)が、他のアデノウイルスの複製遺伝子または構造遺伝子は含まれていない。プラスミドは、アデノウイルス逆位末端反復配列などの複製に重要なシス要素を含んでおらず、したがって、感染性のアデノウイルスが生成されることは予想されない。プラスミドは、Ad5のE1、E3欠失分子クローン(pBHG10、pBR322ベースのプラスミド)に由来した。Ad5 DNAに欠失を導入して、不要なアデノウイルス遺伝子の発現を除去し、アデノウイルスDNAの量を32kbから12kbに低減した。最後に、アンピシリン耐性遺伝子をカナマイシン耐性遺伝子によって置換して、pAdeltaF6(KanR)を作製した。このプラスミドに残るE2、E4、およびVAIのアデノウイルス遺伝子、ならびにHEK293細胞に存在するE1は、AAVベクター産生に必要である。
ヒトβ-galを発現する最適化AAVベクターを開発し、マウス疾患モデルを使用して、脳酵素活性、リソソーム蓄積病変、および神経学的徴候に対するベクターのCSFへの投与の影響を評価した。
動物手順:動物手順はすべて、ペンシルベニア大学の施設内動物実験委員会(Animal Care and Use Committee)によって承認された。GLB1ノックアウトマウスは、理化学研究所バイオリソース研究センターから入手した。マウスは、C57BL/6J背景でヘテロ接合担体として維持した。ICV注入の場合、ベクターを、無菌リン酸緩衝生理食塩水(Gibco)中で5μLの体積に希釈し、カスタムの気密シリンジ(Hamilton)およびセメント加工された10mmの27ゲージ針を使用して、針の基部にプラスチックチューブを装着して穿通を3mmの深さに制限しながら、イソフルラン麻酔マウスに対してフリーハンドで注入した。顎下血液採取は、イソフルラン麻酔のマウスで実施した。血清分離管に血液を採取し、凝固させ、遠心分離によって分離した後、アリコートし、-60℃以下で凍結した。剖検の際、マウスにケタミンおよびキシラジンで鎮静し、ポリエチレンチューブに接続された32ゲージ針を使用して、後頭下穿刺によってCSFを採取した。安楽死は頚椎脱臼によって行った。CSF、心臓、肺、肝臓、および脾臓をドライアイス上で直ちに凍結し、-60℃以下で保管した。脳を除去し、前頭葉の冠状切片を回収し、生化学研究のために凍結した。残りの脳は、組織学的分析に使用した。
空:完全粒子比:ベクター試料を、12mmの光路長を有する2チャネルのチャコール-エポンセンターピースを有するセルにロードする。供給された希釈緩衝液を、各細胞の参照チャネルにロードする。次いで、ロードされた細胞を、AN-60Ti分析ローターに配置し、吸光度およびRI検出器の両方を備えたBeckman-Coulter ProteomeLab XL-I分析超遠心分離器にロードする。20℃に完全に温度平衡化した後、ローターを、12,000rpmの最終実行速度にする。280nmスキャンにおける吸光度は、おおよそ3分毎に約5.5時間記録される(各試料について110回の総スキャン)。生データを、c(s)メソッドを使用して分析し、分析プログラムSEDFITに実装する。得られたサイズ分布をグラフ化し、ピークを統合する。各ピークに関連付けられたパーセンテージ値は、すべてのピーク下の総面積のピーク面積分率を表し、280nmで生成された生データに基づく。多くの研究室では、これらの値を使用して空:完全粒子比を計算している。しかしながら、空の粒子と完全粒子は、この波長で異なる吸光係数を有するため、それに応じて生データを調整することができる。吸光係数調整の前後の両方の空の粒子および完全モノマーピーク値の比を使用して、空の粒子:完全な粒子比を決定する。
サイトメガロウイルスエンハンサー(CB7)、ヒト伸長開始因子1αプロモーター(EF1a)またはヒトユビキチンCプロモーター(UbC)と共にニワトリβアクチンプロモーターによって駆動されるヒトGLB1 cDNAからなる、導入遺伝子カセットが設計された。各カセットをAAVhu68カプシドにパッケージ化し、1011ゲノムコピー(GC)の単回用量を、野生型マウスに脳室内(ICV)注入によって投与した。注入の2週間後、脳およびCSFにおいてβ-gal活性を測定した(図2A~2B)。UbCプロモーターを有するベクターでは、脳およびCSFの両方で、統計的に有意なβ-gal活性の上昇が得られ、酵素活性は、未処置の野生型マウスの活性よりも、脳でほぼ2倍、CSFで10倍大きかった。したがって、さらなる研究のために、AAVhu68.UbC.hGLB1ベクターを選択した。
この研究は、4週齢でAAVベクターで処置されたGLB1-/-マウスにおけるニューロン貯蔵病変の減少を実証した。これは、このモデルで顕著な脳の蓄積病変が現れた1週間後のことである(Hahn 1997、本明細書で引用)。これらの結果は、CSFへのAAVhu68.hGLB1の投与が、脳β-gal活性を増加させ、ニューロンのリソソーム蓄積病変を減少させ、神経学的低下を防止し、遺伝子移入が、脳内のGM1蓄積を防止し、かつ元に戻し得ることを示唆している。
A.GLB1-/-マウスモデルにおけるAAVhu68.UbC.GLB1の最小有効用量(MED)の特定
異なる用量のrAAVhu68.UbC.GLB1の影響を、GLB1-/-マウスモデルにおけるCNS病変および神経学的徴候について評価した。有効性は、血清酵素活性、脳病変の低減、自動歩行分析によって測定される神経学的徴候(例えば、CatWalkシステムを介して)、および盲検再評価者によって実施される標準化された神経学的検査(例えば、姿勢、運動機能、感覚および反射の9点評価)、ならびに生存率によって評価した。安全性分析(採血および分析を含む)も実施した。4週齢のGLB1-/-マウスは、ICV注入によってrAAVhu68.UbC.GLB1(1.3×1011GC、4.4×1010GC、1.3×1010GCまたは4.4×109GC)またはビヒクルの4回用量のうちの1つを受けた(群当たりn=24)。ビヒクル(n=24)で処置されたヘテロ接合性の同腹仔(littermate)は、正常な対照として機能した。
アカゲザル(rhesus monkey)は、患者集団(4~18ヶ月齢の乳児)のサイズおよびCNS解剖学的構造を最もよく再現し、臨床投与経路(route of administration、ROA)を使用して治療することができるため、毒性試験のために選択された。幼若動物を、小児治験集団を代表するように選択した。一実施形態では、幼若アカゲザルは、15~20ヶ月齢である。サイズ、解剖学的構造、およびROAの類似性は、代表的なベクター分布および形質導入プロファイルをもたらし、毒性の正確な評価を可能にする。加えて、げっ歯類モデルよりもNHPにおいてより厳密な神経学的評価が行われ、より敏感なCNS毒性の検出を可能にする。
AAVの全身および髄腔内(intrathecal、IT)投与を評価する非臨床試験は、一貫して、後根神経節(DRG)内の感覚ニューロンの効率的な形質導入、およびある場合は、これらの細胞を伴う毒性の証拠を実証している。髄腔内投与は、それらの中心軸索がCSFに曝されるため、感覚ニューロン形質導入を可能にし得るか、またはDRGが脊髄CSFに曝されるため、rAAVが細胞体に直接到達し得る。
GM1ガングリオシドーシスの乳児形態を有する1ヶ月~18ヶ月の小児対象は、第1/2相試験のために選択される。なぜならば、それらは、満たされていないニーズが最も多く、運動障害および認知障害の両方の急速かつ予測可能な減少を特徴とする最も破壊的な疾患の経過を有する集団を表しているからである(Jarnes Utz et al.,2017,Infantile gangliosidoses: Mapping a timeline of clinical changes.Molecular Genetics and Metabolism.121(2):170-179)。乳児GM1ガングリオシドーシスを有する患者は、典型的には、6ヶ月齢前に神経学的症状を伴う症状の発症を有し、一部の患者は、出生時に筋緊張低下、精神運動遅延、または他の疾患症状を呈する(Caciotti et al.,2011,GM1 gangliosidosis and Morquio B disease: An update on genetic alterations and clinical findings.Biochimica et Biophysica Acta(BBA)-Molecular Basis of Disease.1812(7):782-790)。乳児GM1を有する患者の大部分は、生後数年以内に死亡する(生存期間の中央値19~46ヶ月、研究および支持療法のレベルに依存する)(Regier et al.,2016,MRI/MRS as a surrogate marker for clinical progression in GM1 gangliosidosis.American Journal of Medical Genetics Part A. 170(3):634-644、Regier et al.,2016,The GM1 and GM2 Gangliosidoses: Natural History and Progress toward Therapy.Pediatric endocrinology reviews: PER.13 Suppl 1:663-673、およびJarnes Utz et al.,2017)。したがって、これらの患者は、潜在的に最も好ましいリスク/ベネフィットのプロファイルを有する集団を表している。さらに、これらの患者における予測可能で急速な減少は、頑強な研究設計を支援し、合理的な経過観察期間内に機能的転帰の評価を可能にする。この群では、処置は、基礎となる病理を安定させ、それによって疾患進行を安定させ、生存期間を延長し、スキル(獲得した発達マイルストーン、神経認知および/または運動スキルなど)の喪失を防止し、神経認知および行動低下の進行を遅らせることが期待される。
・大槽(ICM)への単回投与後の2年間にわたって、rAAVhu68.GLB1の安全性および耐容性を評価すること。
・CSFおよび血清中のGLB1活性に基づいて、単回ICM投与後の24ヶ月にわたって、rAAVhu68.GLB1の薬物動態および生物学的活性を評価すること。この評価には、CSFのGM1濃度、ならびに血清および尿のケラタン硫酸レベル、ヘキソサミニダーゼ活性がさらに含まれ得る。
・生存率に対するrAAVhu68.GLB1の影響を評価すること
・24ヶ月齢での栄養管依存性の確率に対するrAAVhu68.GLB1の影響を評価すること
・達成時の年齢、喪失時の年齢、および年齢に適した発達および運動のマイルストーンを維持または獲得している子供の割合を評価することで、疾患の進行を評価すること(世界保健機関[WHO]の基準で定義されている)
・rAAVhu68.GLB1が神経認知発達に及ぼす影響を、以下に基づいて評価すること:
o乳幼児発達のベイリー尺度(Bayley Scales of Infant and Toddler Development)の年齢等価認知、粗大運動、微細運動、受容的および表現的コミュニケーションスコアの変化
oヴァインランドの適応行動尺度(Vineland Adaptive Behavior Scales)の各ドメインの標準スコアの変化
・単回ICM投与後24ヶ月間にわたるrAAVhu68.GLB1の有効性を、以下によってさらに評価すること:
o発作日記によって評価される発作の発症年齢と頻度
o小児の生活の質調査(Pediatric Quality of Life Inventory、PedsQL)および小児生活の質調査の乳児尺度(Pediatric Quality of Life Inventory Infant Scale、PedsQL-IS)における総スコアの変化によって、小児の生活の質に対するrAAVhu68.GLB1の影響を評価すること
・単回ICM投与後24ヶ月にわたるrAAVhu68.GLB1の薬力学的効果を、以下による測定で、さらに評価すること:
oMRIで測定された脳の総容積、脳の下部構造の容積、および側脳室の容積の変化
o視床および基底核活性におけるT1/T2シグナル強度の変化
・肝臓および脾臓の体積に対するrAAVhu68.GLB1の影響を評価すること
・脳波、エコー、視覚誘発電位(VEP)に対するrAAVhu68.GLB1の影響を評価すること
rAAVhu68.GLB1の多施設、非盲検、単群、用量漸増試験(以下の表)。乳児GM1ガングリオシドーシスを有する合計12名の小児対象は、2投与コホートに登録され、ICM注入によって投与されるrAAVhu68.GLB1の単回用量を受ける。安全性および耐容性を2年間にわたって評価し、すべての対象をrAAVhu68.GLB1の投与後5年間にわたって追跡し、安全性および耐容性、薬物動態(導入遺伝子の発現の耐久性)、ならびに臨床転帰の耐久性の長期評価を行う。
・コホート1(低用量):3人の適格な対象(対象#1~#3)を登録し、第1の対象と第2の対象との間に4週間の安全性観察期間を伴って、低用量のrAAVhu68.GLB1を投与する。安全性審査トリガー(safety review trigger、SRT)が観察されない場合、全ての利用可能な安全性データは、コホート1の第3の対象がrAAVhu68.GLB1を投与された4週間後に、独立した安全委員会(safety board)によって評価される。
・コホート2(高用量):進行が決定された場合、3人の適格な対象(対象#4~#6)が登録され、高用量のrAAVhu68.GLB1が、第4の対象と第5の対象との間に4週間の安全性観察期間を伴って投与される。SRTが観察されない場合、独立した安全委員会は、コホート2の第3の対象がrAAVhu68.GLB1を投与された4週間後に、コホート1の対象からの安全性データを含む利用可能なすべての安全性データを評価する。
・コホート3(MTD):安全委員会による肯定的推奨が未決定である場合、最大6名の追加の対象を登録し、MTDで単回ICM用量のrAAVhu68.GLB1を投与する。このコホート内の対象についての投与は、対象間の4週間の安全性観察期間とずれることなく、このコホート内の最初の3人の対象の投与後に、安全性委員会の審査が必要である。
1.登録時に、1ヶ月齢超、18ヶ月齢未満であること。
2.GLB1遺伝子におけるホモ接合性変異もしくは複合ヘテロ接合性変異または欠失の同定、ならびに正常値の下限未満のβ-ガラクトシダーゼ酵素活性に基づいて、GM1ガングリオシドーシスの生化学的診断および分子診断が文書化されていること。
3.6ヶ月齢までの症状の発症、検査時の筋緊張低下、または親/介護者から引き出された病歴が記録されていること。
あるいは
症候前であり、かつ6ヶ月齢までに症状が発症した乳児GM1ガングリオシドーシス疾患の診断が確認された兄弟姉妹を有すること。
1.GM1ガングリオシドーシス、または治験責任医師の見解では試験結果の解釈を混乱させる可能性のある二次的な原因に起因しない、臨床的に有意な神経認知障害があること。
rAAVhu68.GLB1は、単回用量として、1日目に、大槽内へのCTガイドの後頭下注入を介して対象に投与される。
Claims (27)
- AAVhu68カプシドと、標的ヒト細胞でヒトβ-ガラクトシダーゼの発現を導く調節配列の制御下でヒトβ-ガラクトシダーゼをコードするGLB1遺伝子を含むベクターゲノムと、を有するアデノ随伴ウイルス(AAV)。
- 前記ヒトβ-ガラクトシダーゼが、シグナルペプチドと、配列番号4のアミノ酸24~677のアミノ酸配列を有する成熟β-ガラクトシダーゼと、を含む、請求項1に記載のAAV。
- 前記シグナルペプチドが、配列番号4のアミノ酸1~23のアミノ酸配列を有する、請求項2に記載のAAV。
- 前記GLB1遺伝子が、配列番号4のアミノ酸24~677の前記成熟β-ガラクトシダーゼをコードする、配列番号5、配列番号6、配列番号7もしくは配列番号8から選択される配列、または配列番号5~8のうちのいずれか1つと少なくとも95%~99.9%同一の配列を有する、請求項1~3のいずれか一項に記載のAAV。
- 前記調節配列が、ヒトユビキチンC(UbC)プロモーターを含む、請求項1~4のいずれか一項に記載のAAV。
- ベクターゲノムが、配列番号12、配列番号13、配列番号14、配列番号15、または配列番号16から選択される配列を有する、請求項1~5のいずれか一項に記載のAAV。
- 前記AAVhu68カプシドが、配列番号1の核酸配列もしくは配列番号2の予測されたアミノ酸配列をコードする配列から産生されるか、または前記AAVhu68が、
配列番号2の1~736の予測されたアミノ酸配列をコードする核酸配列からの発現により産生されるvp1タンパク質、配列番号1から産生されるvp1タンパク質、もしくは配列番号2の1~736の予測されたアミノ酸配列をコードする配列番号1と少なくとも70%同一の核酸配列から産生されるvp1タンパク質から選択されるAAVhu68 vp1タンパク質の異種集団と、
配列番号2の少なくとも約アミノ酸138~736の予測されたアミノ酸配列をコードする核酸配列からの発現により産生されるvp2タンパク質、配列番号1の少なくともヌクレオチド412~2211を含む配列から産生されるvp2タンパク質、もしくは配列番号2の少なくとも約アミノ酸138~736の予測されたアミノ酸配列をコードする配列番号1の少なくともヌクレオチド412~2211と少なくとも70%同一の核酸配列から産生されるvp2タンパク質から選択されるAAVhu68 vp2タンパク質の異種集団と、
配列番号2の少なくとも約アミノ酸203~736の予測されたアミノ酸配列をコードする核酸配列からの発現により産生されるvp3タンパク質、配列番号1の少なくともヌクレオチド607~2211を含む配列から産生されるvp3タンパク質、もしくは配列番号2の少なくとも約アミノ酸203~736の予測されたアミノ酸配列をコードする配列番号1の少なくともヌクレオチド607~2211と少なくとも70%同一の核酸配列から産生されるvp3タンパク質から選択されるAAVhu68 vp3タンパク質の異種集団と、を含む、請求項1~6のいずれか一項に記載のAAV。 - 製剤緩衝液と、請求項1~7のいずれか一項に記載のAAVと、を含む、水性医薬組成物。
- 前記製剤緩衝液が、
緩衝生理食塩水、ならびにナトリウム、カルシウム、マグネシウム、カリウム、またはそれらの混合物のうちの1つ以上を含む人工脳脊髄液と、
界面活性剤と、を含む、請求項8に記載の医薬組成物。 - 前記界面活性剤が、前記医薬組成物の0.0005%w/w~約0.001%w/wで存在する、請求項9に記載の医薬組成物。
- 前記組成物が、7.5~7.8、もしくは6.2~7.7の範囲、または約7のpHである、請求項8~10のいずれか一項に記載の医薬組成物。
- 大槽内注入(ICM)を介した患者への投与に好適な、GM1ガングリオシドーシスの治療に使用するための、請求項1~7のいずれか一項に記載のAAVまたは請求項8~11のいずれか一項に記載の医薬組成物。
- GM1ガングリオシドーシスを有する患者または18ヶ月齢以下の乳児ガングリオシドーシスを有する患者への投与に好適な、GM1ガングリオシドーシスの治療に使用するための、請求項1~7および12のいずれか一項に記載のAAV、または請求項8~12のいずれか一項に記載の組成物。
- GM1ガングリオシドーシスの症状を改善する、またはGM1ガングリオシドーシスの神経学的症状を改善するために、GM1ガングリオシドーシスの治療を必要とする患者への投与に好適な、GM1ガングリオシドーシスの治療に使用するための、請求項1~7および12~13のいずれか一項に記載のAAV、または請求項8~13のいずれか一項に記載の組成物。
- GM1ガングリオシドーシスの治療に使用するための請求項14に記載のAAVまたは組成物であって、前記GM1ガングリオシドーシスの改善が、平均寿命の増加、栄養管の必要性の減少、発作の発生率および頻度の減少、神経認知低下への進行の減少、ならびに/または神経認知発達の改善を含む、AAVまたは組成物。
- 前記AAVまたは前記組成物が、大槽内へのCTガイドの後頭下注入を介して投与される、GM1ガングリオシドーシスの治療に使用するための、請求項1~7および12~15のいずれか一項に記載のAAV、または請求項8~15のいずれか一項に記載の組成物。
- 前記AAVまたは前記組成物が、単回用量で投与される、GM1ガングリオシドーシスの治療に使用するための、請求項1~7および12~16のいずれか一項に記載のAAV、または請求項8~16のいずれか一項に記載の組成物。
- 前記AAVが、患者当たり2×1012GC~患者当たり3×1014GCの用量、または患者当たり8×1012ゲノムコピー(GC)~患者当たり3×1014GCの用量、任意選択的に、患者当たり2×1013GC~患者当たり3×1014GCの用量、患者当たり8×1013GC~患者当たり3×1014GC、または患者当たり約9×1013GCの用量で投与される、GM1ガングリオシドーシスの治療に使用するための、請求項1~7および12~17のいずれか一項に記載のAAV、または請求項8~17のいずれか一項に記載の組成物。
- 前記投与が、1x1010GC/g脳質量~3.4x1011GC/g脳質量の用量、任意選択的に、3.4x1010GC/g脳質量~3.4x1011GC/g脳質量、1.0x1011GC/g脳質量~約3.4x1011GC/g脳質量、または約1.1x1011GC/g脳質量の用量で、前記AAVを送達することを含む、GM1ガングリオシドーシスの治療に使用するための、請求項1~7および12~18のいずれか一項に記載のAAV、または請求項8~18のいずれか一項に記載の組成物。
- 前記GM1ガングリオシドーシスの治療のための医薬品の製造における、請求項1~7および12~19のいずれか一項に記載のAAVまたは請求項8~19のいずれか一項に記載の組成物の使用。
- GM1ガングリオシドーシスを有する患者を治療する方法であって、有効量の請求項1~7のいずれか一項に記載のAAVまたは請求項8~11のいずれか一項に記載の医薬組成物を、GM1ガングリオシドーシスを有する前記患者に投与することを含む、方法。
- 前記AAVまたは前記医薬組成物が、大槽内注入(ICM)、任意選択的に、大槽内へのCTガイドの後頭下注入を介して投与される、請求項21に記載の方法。
- 前記方法が、単回用量で前記AAVまたは前記医薬組成物を送達することを伴う、請求項21または22に記載の方法。
- 前記患者が、乳児ガングリオシドーシスを有し、18ヶ月齢以下である、請求項21~23のいずれか一項に記載の方法。
- 前記AAVまたは組成物の前記投与が、GM1ガングリオシドーシスの症状を改善するか、またはGM1ガングリオシドーシスの神経学的症状を改善し、任意選択的に、前記患者が、治療後に、増加した平均寿命、栄養管の必要性の減少、発作の発生率および頻度の減少、神経認知低下への進行の減少、ならびに/または神経認知発達の改善のうちの1つ以上を有する、請求項20~24のいずれか一項に記載の方法。
- 前記AAVが、患者当たり2x1012GC~患者当たり3x1014GC、または患者当たり8x1012ゲノムコピー(GC)~患者当たり3x1014GC、任意選択的に、患者当たり2x1013GC~患者当たり3x1014GC、患者当たり8x1013GC~患者当たり3x1014GC、または患者当たり約9x1013GCの用量で投与される、請求項20~25のいずれか一項に記載の方法。
- 前記AAVが、1x1010GC/g脳質量~3.4x1011GC/g脳質量の用量、任意選択的に、3.4x1010GC/g脳質量~3.4x1011GC/g脳質量、1.0x1011GC/g脳質量~約3.4x1011GC/g脳質量、または約1.1x1011GC/g脳質量の用量で投与される、請求項20~26のいずれかに記載の方法。
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