He Hua Pai te Whakaora Brexu-cel CAR-T i roto i ngā Tūroro Pakeke R/R B-ALL

Ko te Brexucabtagene autoleucel (brexu-cel), he rongoā pūtau CD19 CAR-T, kua waiho hei whiringa maimoatanga nui mō te relapsed/refractory (R/R) B-cell acute lymphoblastic leukemia (B-ALL) i roto i ngā pakeke. I runga i ngā hua o te whakamātautau ZUMA-3, i whakaaetia te brexu-cel i te United States mō ngā tūroro pakeke me te R/R B-ALL. Heoi, he mea nui ngā rangahau o te ao tūturu kia tino mārama ai ki tōna whai huatanga me tōna haumaru i roto i te mahi haumanu. He rangahau nui tata nei i whakaputaina i roto i te Te Pukapuka o te Matepukupuku Hauora e whakarato ana i ngā māramatanga matua ki te mahi a brexu-cel puta noa i tētahi rōpū tūroro whānui, e whakaatu ana i ngā hua whakatenatena mō ngā reiti murunga me te oranga.

Tirohanga Whānui o te Akoranga

I roto i tēnei rangahau maha-pokapū, i uru atu ki te 204 ngā tūroro pakeke me te R/R B-ALL i rongoatia i waho o ngā whakamātautau haumanu i ngā pokapū hauora 31 i te United States. I whiwhi angitu te katoa o ngā tūroro 189 i te brexu-cel, me te toharite o ngā raina rongoā e whā i mua. Tata ki te haurua o ngā tūroro kua whai wāhi ki te whakawhitinga pūtau take hematopoietic (HSCT), 59% kua whiwhi blinatumomab, ā, 48% kua rongoatia ki te inotuzumab ozogamicin. I te wā o te leukapheresis, 42% o ngā tūroro kei roto i te whakaoranga āhua, he paearu e kore ai rātou e uru ki te whakamātautau ZUMA-3 taketake.

Ngā Kitenga Matua

Whai muri i te aroturukitanga toharite o te 11.4 marama, i whakaatuhia e ngā hua o te rangahau te whai huatanga nui o te brexu-cel ki te rongoā i te R/R B-ALL:

• Whakautu Katoa (CR): 90% o ngā tūroro i rongoatia i tutuki te urupare katoa, me te 79% i whakaatu i te iti rawa o te murunga toenga mate (MRD)-kāore i te pai.
• Te Oranga Kore-Ahunga Whakamua (PFS): Ko te PFS toharite he 9.5 marama.
• Te Oranga Whānui (OS): Kāore i eke ki te OS waenga, e tohu ana i tētahi pānga roa pea ki te whakaroa i te oranga o te tūroro.
• Te Whakahē a te MRD: Mō ngā tūroro i aromatawaitia ā rātou MRD mā te whakamahi i te raupapatanga o te whakatupuranga hou o clonoSEQ, i honoa te korenga o te MRD i te rā 28 ki te whakapainga o te PFS me te OS, e whakakaha ana i te uara o te MRD hei tohu matapae.

Te Pānga o te Whakaora Whakakotahi

I kitea anō hoki i roto i te rangahau he pai ake te PFS o ngā tūroro i whiwhi i te HSCT whakakotahi i muri i te maimoatanga brexu-cel i te hunga kāore i whiwhi i tētahi maimoatanga whakakotahi, tiaki rānei. I roto i tētahi tātaritanga maha-taurangi, i honoa te HSCT (i mahia i roto i te 30 tūroro) i muri i te maimoatanga CAR-T ki te whakahekenga nui o te mōrearea o te whanaketanga o te mate (HR=0.34).

Kōtaha Haumaru

Ahakoa tōna whai huatanga, i puta mai ngā pānga kino nui i te maimoatanga brexu-cel, he mea nui ēnei hei whakaaroaro mā te whakahaere haumanu:

• Te Mate Tukunga Cytokine (CRS) me te Paitini ki te Neuro (ICANS): I puta te CRS i roto i te 84% o ngā tūroro, ā, 11% ngā kēhi kino (taumata 3-4). I puta te ICANS i roto i te 56% o ngā tūroro, ā, 31% ngā kēhi kino.
• Te Matenga me ngā Matenga Kore-Hoki-anō: E toru tekau mā whā ōrau o ngā tūroro i mate i te wā o te rangahau, ā, 13% o ngā matenga kāore i pā ki te whanaketanga o te mate pukupuku toto. Tekau ngā tūroro i mate i roto i ngā rā 28 tuatahi i muri i te maimoatanga nā te paitini, ngā mate pāwera rānei, inā koa i roto i te hunga he nui te mate. Ko ngā mate harore te tino take o ngā matenga e pā ana ki te mate, e tohu ana i te hiahia kia mataara te whakahaere i te mate.

Whakamutunga

Ko ngā kitenga o tēnei rangahau o te ao tūturu e whakaata ana i ngā hua o te whakamātautau ZUMA-3, e whakaū ana i ngā reiti teitei o te CR MRD-kino a brexu-cel me ngā putanga oranga pai mō ngā tūroro R/R B-ALL pakeke. Heoi, ko ngā paitini nui, inā koa ko ngā ICANS kino me te matenga wawe, e whakaatu ana i te hiranga o ngā rautaki whakaiti mōrearea, tae atu ki te aukati i te mate me te aroturuki tata. Hei tāpiri, i whakaatuhia te whakamahinga o te rongoā HSCT whakakotahi i muri i te CAR-T hei whakapai ake i te oranga kore-haere whakamua, e tuku ana i tētahi ara pea hei arotau i ngā putanga o te tūroro.

E whakaatu ana tēnei rangahau i te tūranga o te brexu-cel hei maimoatanga paerewa mō te R/R B-ALL pakeke, me te whakanui anō hoki i ngā wero tonu ki te whakahaere i ōna pānga kino.