Pravibismane

▎药明康德内容团队编辑本期看点1. Moderna公司公布了其开发的mRNA蛋白替代疗法mRNA-3927的首个临床试验结果，将mRNA的应用范围扩展到疫苗之外。2. 中度或重度糖尿病足溃疡感染的外用辅助治疗pravibismane在早期临床试验中能够加速缩小溃疡面积，同时使患者与糖尿病溃疡相关的下肢截肢发生率降低了约6倍。药明康德内容团队整理mRNA-3927：公布1/2期临床试验数据Moderna公司在《自然》杂志上发表了其用于治疗丙酸血症（PA）的在研mRNA疗法mRNA-3927的积极早期临床数据。PA是由丙酰辅酶A羧化酶（PCC）的α或β亚基（分别由PCCA和PCCB基因编码）的致病变异引起的，这些变异会导致PCC缺乏，并使有毒的代谢物积累。该病的特点是反复出现的危及生命的代谢失代偿事件（MDE）和多系统并发症。目前，没有针对PA的根本原因的有效治疗方法。mRNA-3927是一种通过静脉给药、由脂质纳米颗粒（LNP）包裹的双mRNA疗法，该疗法编码PCCA和PCCB亚基蛋白以恢复肝脏中功能性PCC酶活性。通过编码细胞内蛋白，mRNA疗法可能在预防和治疗急性代谢失代偿中起作用。此次公布的中期分析显示，mRNA-3927表现出良好的安全性和耐受性，接受mRNA-3927治疗的患者的发病风险降低了70%。研究人员指出，这是首个在罕见疾病患者中，使用mRNA表达细胞内蛋白，作为蛋白替代疗法的临床试验。▲mRNA-3927降低患者出现危及生命的代谢失代偿事件的次数（图片来源：参考资料[16]）Pravibismane：公布1b期临床试验数据Microbion公司公布了其外用候选疗法pravibismane作为中度或重度糖尿病足溃疡感染的辅助治疗的1b期研究结果。Pravibismane具有独特的三重新型作用模式，包括强效广谱抗感染性、抗生物膜活性和免疫调节活性。此次公布的结果显示，pravibismane的耐受性良好，全身吸收率极低，没有出现任何治疗引发的不良反应或严重不良事件。与安慰剂组相比，接受pravibismane治疗的受试者溃疡面积缩小了约3倍（85%对比30%），与糖尿病溃疡相关的下肢截肢发生率降低了约6倍（2.6%对比15.4%）。这些结果表明，局部使用pravibismane有望满足糖尿病溃疡患者的未竟药物需求，这种新疗法可以同时治疗细菌生物膜相关感染并加速缩小溃疡面积，并有可能导致伤口完全再上皮化和闭合，同时降低患者再感染和截肢的风险。Deltacel（KB-GDT-01）：公布1期临床试验中第三例患者的数据Kiromic BioPharma公司公布了其在研γ-δ T细胞（GDT）疗法Deltacel（KB-GDT-01）用于治疗IV期转移性非小细胞肺癌（NSCLC）患者的1期临床试验的积极早期疗效数据。Deltacel是一种同种异体细胞治疗产品，由未经修饰的供体来源GDT组成。Deltacel旨在利用GDT的天然效力靶向实体瘤，最初的临床开发重点是NSCLC（约占肺癌病例的80%至85%）。两项临床前研究的数据表明，Deltacel与低剂量放射治疗相结合具有良好的安全性和有效性。从治疗开始六周后获得的初步结果显示，Deltacel在控制肿瘤生长方面具有有效性，以及良好的安全性和耐受性。此前公布的首例患者在治疗前三天被确诊为病情进展活跃。接受Deltacel治疗六周后，计算机断层扫描（CT）扫描证实了此患者的病情稳定，初步的无进展生存期为一个半月。第二例患者在治疗开始前进行了核磁共振（MRI）扫描，发现了新的转移灶，这些新病灶在治疗后第六周的MRI复查中被发现已完全消退。此次公布的第三例患者在入组时疾病处于活动期，接受治疗后的第六周时，PET/CT、诊断CT和MRI扫描结果均显示患者的疾病正趋于稳定，没有出现新的转移性疾病。cNeT：公布1/2a期临床试验的中期数据Achilles Therapeutics公司公布了关于克隆性新抗原反应性T细胞（cNeT）在晚期不可切除或转移性NSCLC患者中、以及在复发性或转移性恶性黑色素瘤患者中的早期临床试验的中期数据。此次公布的数据显示，25%（3/12）的高剂量组患者达到疾病稳定（SD）状态，肿瘤体积有所缩小。而因为与IL-2相关的毒性更少，cNeT的安全性和耐受性与标准的肿瘤浸润淋巴细胞疗法相比更有优势。FG-3246：公布1期临床试验数据FibroGen公布了其与Fortis Therapeutics联合开发的潜在“first-in-class”抗体偶联药物（ADC）FG-3246（亦称FOR46）在1期临床试验中获得积极顶线数据。FG-3246旨在治疗转移性去势抵抗性前列腺癌和其他肿瘤类型，其靶向的CD46是一种细胞受体靶点，在前列腺癌和其他肿瘤类型中高度表达，并在大多数正常组织中表达非常有限。FG-3246由抗CD46抗体与抗有丝分裂剂MMAE连接而成，MMAE是一种已经过临床验证的ADC有效载荷。此次公布的结果显示，36%可评估前列腺特异性抗原（PSA）的患者被观察到PSA减少超过50%（PSA50）。对于可根据RECIST评估的患者，20%达到部分缓解（PR），定义为肿瘤缩小超过30%，中位缓解持续时间为7.5个月。在这批接受大量前期治疗的患者中，中位放射学无进展生存期（rPFS）为8.7个月。最常见的不良事件与其他包含细胞毒性药物MMAE作为载荷的ADCs一致，包括输液相关反应、疲劳、体重减轻、中性粒细胞减少和周围神经病变。Itolizumab：公布1b期临床试验数据Equillium公司公布了其在研单克隆抗体itolizumab治疗狼疮性肾炎的1b期临床试验的积极顶线数据。Itolizumab是一种潜在“first-in-class”的CD6靶向单克隆抗体，可选择性靶向CD6-ALCAM信号通路，选择性抑制致病性效应T细胞，同时保留对维持平衡免疫反应至关重要的调节T细胞。T细胞可驱动多种免疫炎症疾病，该通路在调节T细胞的活性和运输方面发挥着核心作用。此次公布的结果显示，当itolizumab联合吗替麦考酚酯/霉酚酸（MMF/MPA）和皮质类固醇使用时，与标准治疗方法相比，患者达成完全缓解（CR）和PR的比例更高，且尿蛋白肌酐比值（UPCR）的降低更为迅速和显著。大多数治疗伴发不良反应（TEAE）的严重程度被评估为轻度（1级）或中度（2级），其中两种最常见的TEAE是淋巴细胞减少和外周水肿。CONV01-α：公布1/2期临床试验数据Convergent Therapeutics的主打在研疗法CONV01-α是一种与锕-225（Ac-225）结合的单克隆抗体，靶向前列腺特异性膜抗原（PSMA）。锕-225是一种放射性α粒子发射器。CONV01-α的一个关键功能特性是，一旦与PSMA结合，它就会被内化，将其强大的放射性有效成分直接送入前列腺癌细胞，同时将对周围健康组织的损害降至最低。新闻稿指出，CONV01-α有望成为首个获批用于前列腺癌治疗的Ac-225放射性抗体。在一项针对晚期前列腺癌患者的多剂量、剂量递增研究中，患者对CONV01-α的耐受性良好，67%的患者达到了PSA50，27%的患者被观察到PSA减少超过90%（PSA90）。正在进行的研究表明，CONV01-α在单独使用或与其他癌症疗法联合使用时可能非常有效。TPST-1120：公布1期临床试验数据Tempest Therapeutics公司公布了其在研疗法TPST-1120单药或联用纳武利尤单抗治疗晚期实体瘤的1期试验的积极结果。TPST-1120是一种口服、选择性PPARα小分子拮抗剂。临床前数据显示，TPST-1120可直接杀死肿瘤细胞，并靶向肿瘤微环境中的抑制性免疫通路。这两种类型中的靶向细胞皆依赖脂肪酸代谢，该代谢过程由PPARα转录因子调节。在一项针对接受过多次治疗的晚期实体瘤患者的1期临床试验中，TPST-1120单药治疗和与PD-1抑制剂纳武利尤单抗联合应用均导致肿瘤缩小及生物标志物的变化。此次公布的临床数据显示，TPST-1120单药或联用纳武利尤单抗的耐受性良好，最大耐受剂量尚未确定。在接受单药治疗的患者中，53%（10/19）可评估患者的最佳缓解是SD，其中5名患者的治疗时间超过5个月。21%的患者（4例）在接受治疗后靶病灶缩小，另有3例患者的最佳缓解是靶病灶无生长。在此前接受过多线治疗的胆管癌（CCA）、肝细胞癌（HCC）和肾细胞癌（RCC）患者的联合治疗队列中，所有剂量水平的客观缓解率（ORR）为23%（3/13，均为PR）。在曾接受过抗PD-1治疗并疾病进展的RCC和CCA患者中，ORR为50%（2/4）。全血标本分析显示，PPARα相关免疫基因的表达与TPST-1120的剂量水平有关。其中一些变化仅在部分获得缓解的患者中观察到，这说明TPST-1120的生物活性与患者的临床结局有关。SZN-043：公布1a期临床试验数据Surrozen公司公布了SZN-043在健康受试者和肝硬化患者中进行的1a期临床试验的最新进展。SZN-043是采用Surrozen的SWEETS技术开发的首个候选药物，旨在治疗严重肝病。在这项研究中，SZN-043在所有受试者中均表现出了可接受的安全性和耐受性。在有肝病史的肝硬化患者中，SZN-043能够呈剂量依赖性地激活Wnt信号转导，并改善患者的肝功能。ELI-002：公布1期临床试验的新数据Elicio Therapeutics公司公布了其在研治疗性癌症免疫疗法ELI-002治疗具高复发风险胰腺癌和结直肠癌患者的新临床试验数据，这些患者携带KRAS G12D和G12R突变。ELI-002由AMP修饰的KRAS突变体（mKRAS）肽段，和一种AMP修饰的免疫刺激寡核苷酸佐剂ELI-004组成，经皮下给药靶向淋巴结。它能产生RAS特异性杀伤性T细胞，以攻击术后残留肿瘤细胞，有望延长癌症患者缓解并可预防未来复发。此次公布的结果显示，68%接受ELI-002治疗的患者产生了细胞毒性mKRAS特异性CD4+T细胞；84%的患者产生了细胞毒性mKRAS特异性CD8+T细胞；大多数接受ELI-002治疗的患者都出现了抗原扩散，诱导的T细胞靶向mKRAS以外的其他患者特异性肿瘤突变；在大多数接受ELI-002加强剂量治疗的患者中观察到持久的mKRAS特异性T细胞应答，记忆T细胞表型增加。大家都在看药明康德为全球生物医药行业提供一体化、端到端的新药研发和生产服务，服务范围涵盖化学药研发和生产、生物学研究、临床前测试和临床试验研发、细胞及基因疗法研发、测试和生产等领域。如您有相关业务需求，欢迎点击下方图片填写具体信息。▲如您有任何业务需求，请长按扫描上方二维码，或点击文末“阅读原文/Read more”，即可访问业务对接平台，填写业务需求信息▲欲了解更多前沿技术在生物医药产业中的应用，请长按扫描上方二维码，即可访问“药明直播间”，观看相关话题的直播讨论与精彩回放参考资料（可上下滑动查看）[1] Hanmi Pharm submits IND to US FDA for obesity drug HM15275 phase 1 trial. Retrieved April 7, 2024, from https://www.koreabiomed.com/news/articleView.html?idxno=23719[2] Equillium Announces Positive Topline Data from the Type B Portion of the Phase 1b EQUALISE Study of Itolizumab in Lupus Nephritis. Retrieved April 7, 2024, from https://www.businesswire.com/news/home/20240401373328/en[3] Context Therapeutics Submits IND Application to Evaluate CTIM-76 in Claudin 6-Positive Cancers. Retrieved April 7, 2024, from https://www.globenewswire.com/news-release/2024/04/01/2855097/0/en/Context-Therapeutics-Submits-IND-Application-to-Evaluate-CTIM-76-in-Claudin-6-Positive-Cancers.html[4] FibroGen Announces Topline Results from Phase 1 Monotherapy Study of FG-3246 in Patients with Metastatic Castration-Resistant Prostate Cancer. Retrieved April 7, 2024, from https://www.globenewswire.com/news-release/2024/04/02/2856521/33525/en/FibroGen-Announces-Topline-Results-from-Phase-1-Monotherapy-Study-of-FG-3246-in-Patients-with-Metastatic-Castration-Resistant-Prostate-Cancer.html[5] Convergent Therapeutics Announces FDA Clearance of IND Application for CONV01-α, a Best-in-Class Radioantibody Targeting Prostate-Specific Membrane Antigen. Retrieved April 7, 2024, from https://www.prnewswire.com/news-releases/convergent-therapeutics-announces-fda-clearance-of-ind-application-for-conv01--a-best-in-class-radioantibody-targeting-prostate-specific-membrane-antigen-302106271.html[6] Caribou Biosciences Expands Clinical Development of CB-010 with FDA Clearance of IND in Lupus. Retrieved April 7, 2024, from https://www.globenewswire.com/news-release/2024/04/04/2858178/0/en/Caribou-Biosciences-Expands-Clinical-Development-of-CB-010-with-FDA-Clearance-of-IND-in-Lupus.html[7] iECURE Announces FDA Clearance of Investigational New Drug Application for ECUR-506 to Initiate OTC-HOPE Trial for Treatment of Neonatal Onset Ornithine Transcarbamylase Deficiency in the U.S. Retrieved April 7, 2024, from https://www.businesswire.com/news/home/20240404289854/en[8] Tempest Announces Publication of Positive Data from Phase 1 Trial of TPST-1120 in Patients with Advanced Solid Tumors in Journal of Cancer Research Communications. Retrieved April 7, 2024, from https://www.globenewswire.com/news-release/2024/04/04/2857718/0/en/Tempest-Announces-Publication-of-Positive-Data-from-Phase-1-Trial-of-TPST-1120-in-Patients-with-Advanced-Solid-Tumors-in-Journal-of-Cancer-Research-Communications.html[9] Verismo Therapeutics Announces Submission of IND Application to the FDA for SynKIR™-310 in Relapsed/Refractory B-cell NHL. Retrieved April 7, 2024, from https://www.prnewswire.com/news-releases/verismo-therapeutics-announces-submission-of-ind-application-to-the-fda-for-synkir-310-in-relapsedrefractory-b-cell-nhl-302106584.html[10] EILEAN THERAPEUTICS RECEIVES CLEARANCE TO INITIATE R/R AML TRIAL WITH LOMONITINIB, A SELECTIVE PAN-FLT3/IRAK4 INHIBITOR. Retrieved April 7, 2024, from https://www.prnewswire.com/news-releases/eilean-therapeutics-receives-clearance-to-initiate-rr-aml-trial-with-lomonitinib-a-selective-pan-flt3irak4-inhibitor-302108790.html[11] Microbion's Topical Pravibismane Phase 1b Moderate or Severe Diabetic Foot Ulcer Infection Study is Published in International Wound Journal. Retrieved April 7, 2024, from https://www.prnewswire.com/news-releases/microbions-topical-pravibismane-phase-1b-moderate-or-severe-diabetic-foot-ulcer-infection-study-is-published-in-international-wound-journal-302107893.html[12] Elicio Therapeutics to Present Updated Clinical T Cell and Antigen Spreading Response Data from the Ongoing AMPLIFY-201 Phase 1 Study of ELI-002 and Preclinical Data on ELI-007 and ELI-008 at the AACR Annual Meeting. Retrieved April 7, 2024, from https://elicio.com/press_releases/elicio-therapeutics-to-present-updated-clinical-t-cell-and-antigen-spreading-response-data-from-the-ongoing-amplify-201-phase-1-study-of-eli-002-and-preclinical-data-on-eli-007-and-eli-008-at-the-aacr/[13] Achilles Therapeutics Provides Interim Phase I/IIa Update on Clonal Neoantigen Reactive T Cells in Advanced NSCLC and Melanoma Including First Patients Dosed with Enhanced Host Conditioning. Retrieved April 7, 2024, from https://ir.achillestx.com/news-releases/news-release-details/achilles-therapeutics-provides-interim-phase-iiia-update-clonal[14] Kiromic BioPharma Reports Favorable Safety, Tolerability, and Early Efficacy from Third Patient in Deltacel-01 Clinical Trial. Retrieved April 7, 2024, from https://www.businesswire.com/news/home/20240402903280/en[15] Surrozen Announces Safety, Pharmacodynamic and Liver Function Data for SZN-043. Retrieved April 7, 2024, from https://investors.surrozen.com/news-releases/news-release-details/surrozen-announces-safety-pharmacodynamic-and-liver-function[16] Koeberl et al., (2024). Interim analyses of a first-in-human phase 1/2 mRNA trial for propionic acidaemia. Nature, https://doi.org/10.1038/s41586-024-07266-7免责声明：药明康德内容团队专注介绍全球生物医药健康研究进展。本文仅作信息交流之目的，文中观点不代表药明康德立场，亦不代表药明康德支持或反对文中观点。本文也不是治疗方案推荐。如需获得治疗方案指导，请前往正规医院就诊。版权说明：本文来自药明康德内容团队，欢迎个人转发至朋友圈，谢绝媒体或机构未经授权以任何形式转载至其他平台。转载授权请在「药明康德」微信公众号回复“转载”，获取转载须知。分享，点赞，在看，聚焦全球生物医药健康创新

Second orphan drug designation granted for pravibismane, in addition to the treatment of pulmonary infections in patients with cystic fibrosis Pravibismane demonstrated statistically significant in vivo efficacy against NTM in chronic and acute infection models BOZEMAN, MT and VANCOUVER, BC, Jan. 30, 2024 /PRNewswire/ - Microbion Corporation today announced that the company has been granted a second orphan drug designation for its lead drug candidate, pravibismane, for the treatment of non-tuberculous mycobacterial (NTM) infections. NTM infections are most commonly found in the lungs; however, skin and soft tissue, indwelling medical devices, lymph nodes, and blood can also harbor NTM infections. "We are pleased that the FDA has granted pravibismane this second orphan drug designation for the treatment of NTM infections," said Dr. Jeff Millard, Microbion's Chief Scientific Officer. "Our in vitro and in vivo data for the activity of pravibismane against pulmonary NTM infections and related biofilms, demonstrate unique and highly differentiated, potent activity compared to other agents currently used to treat NTM, while being well tolerated. We look forward to working closely with all our stakeholders and patients to advance the development of pravibismane for the treatment of NTM infections." "This designation comes at an opportune time as Microbion plans to initiate a Phase 3 program for topical pravibismane treatment of chronic wounds and a Phase 1 program with inhaled pravibismane for treatment of NTM lung infections," said Karim Lalji, Chief Executive Officer. "In an in vivo study using a chronic NTM lung infection model, inhaled pravibismane demonstrated an over 18-fold reduction of M. abscessus, the most pathogenic and rapidly growing species, for which no approved therapy exists. We are encouraged by the potential of pravibismane to address the critical unmet need of NTM infections." The FDA has the authority to grant orphan drug designation to a drug or biological product to prevent, diagnose, or treat a rare disease or condition, defined as any disease or condition that affects fewer than 200,000 persons in the United States. Orphan drug designation qualifies Microbion for various development incentives of the Orphan Drug Act, including seven years of market exclusivity. About Microbion Microbion is a clinical-stage pharmaceutical company developing a new class of therapeutic compounds to improve the lives of patients with rare and serious diseases. Microbion's lead drug candidate, pravibismane, is the first product in this new class and has multiple novel modes of action, including potent broad spectrum anti-infective, antibiofilm, and anti-inflammatory activity, offering unique potential to address the unmet needs of chronic and severe health conditions. Topical pravibismane is completing Phase 2 development for the treatment of chronic wounds. Local pravibismane is in Phase 2 clinical development for orthopedic infections and inhaled pravibismane is advancing into Phase 1 clinical development for the treatment of chronic lung diseases, including non-tuberculous mycobacteria (NTM) and cystic fibrosis-related lung infections. Pravibismane has received backing from the Cystic Fibrosis Foundation, NIH, US DoD, and CARB-X with over $20 million in grants. The FDA has granted pravibismane Orphan Drug, Fast Track, and Qualified Infectious Disease Product (QIDP) designations. For more information visit: . Safe Harbor Statement Certain of the statements made in this press release are forward-looking, such as those, among others, relating to the success of clinical development of pravibismane and preparation for potential commercialization. These statements are subject to risks and uncertainties that could cause actual results and events to differ materially from those anticipated, including, but not limited to, risks and uncertainties related to: our ability to enroll patients in our clinical trials at the pace that we project; the size and growth of the potential markets for pravibismane or any future product candidates and our ability to serve those markets; our ability to obtain and maintain regulatory approval of pravibismane or any future product candidates; and our expectations regarding the potential safety, efficacy or clinical utility of pravibismane or any future product candidates. Actual results or developments may differ materially from those projected or implied in these forward-looking statements. Microbion Corporation disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.