Narlumosbart

This study aimed to assess the efficacy and safety of three dosing regimens of JMT103 in patients with bone metastases from solid tumors. Eligible patients were randomly assigned to receive JMT103 subcutaneously, 120 mg every 4 weeks (Cohort 1), 120 mg every 8 weeks (Cohort 2), or 180 mg every 8 weeks (Cohort 3) for up to 49 weeks. The primary endpoint was change from baseline to Week 13 in creatinine‐adjusted urinary N‐telopeptide (uNTx/Cr). Two hundred and ninety‐five patients were randomized, and 293 received at least one dose of JMT103, of whom 96 were assigned to Cohort 1, 97 were assigned to Cohort 2, and 100 were assigned to Cohort 3. The median (interquartile range) percentage reduction in uNTx/Cr at Week 13 was 80.0% (49.9%, 93.4%) in Cohort 1, 73.0% (34.5%, 94.0%) in Cohort 2, and 75.7% (40.4%, 92.0%) in Cohort 3, respectively. On‐study skeletal‐related events were reported by 3.1% of patients in Cohort 1, 6.2% in Cohort 2, and 7.0% in Cohort 3. Treatment‐emergent adverse events occurred in 289 patients, 162 of whom were deemed treatment‐related. The most common treatment‐related adverse events were hypocalcemia (23.2%), hypophosphatemia (22.9%), and increased aspartate transaminase (11.9%). JMT103 demonstrated a good safety and a strong suppression of the bone turnover markers.

The 'Antibodies to Watch' article series provides an annual summary of commercially sponsored monoclonal antibody therapeutics currently in late-stage clinical development, regulatory review, and those recently granted a first approval in any country. In this installment, we discuss key details for 16 antibody therapeutics granted a first approval in 2023, as of November 17 (lecanemab (Leqembi), rozanolixizumab (RYSTIGGO), pozelimab (VEOPOZ), mirikizumab (Omvoh), talquetamab (Talvey), elranatamab (Elrexfio), epcoritamab (EPKINLY), glofitamab (COLUMVI), retifanlimab (Zynyz), concizumab (Alhemo), lebrikizumab (EBGLYSS), tafolecimab (SINTBILO), narlumosbart (Jinlitai), zuberitamab (Enrexib), adebrelimab (Arelili), and divozilimab (Ivlizi)). We briefly review 26 product candidates for which marketing applications are under consideration in at least one country or region, and 23 investigational antibody therapeutics that are forecast to enter regulatory review by the end of 2024 based on company disclosures. These nearly 50 product candidates include numerous innovative bispecific antibodies, such as odronextamab, ivonescimab, linvoseltamab, zenocutuzumab, and erfonrilimab, and antibody-drug conjugates, such as trastuzumab botidotin, patritumab deruxtecan, datopotamab deruxtecan, and MRG002, as well as a mixture of two immunocytokines (bifikafusp alfa and onfekafusp alfa). We also discuss clinical phase transition and overall approval success rates for antibody therapeutics, which are crucial to the biopharmaceutical industry because these rates inform decisions about resource allocation. Our analyses indicate that these molecules have approval success rates in the range of 14-32%, with higher rates associated with antibodies developed for non-cancer indications. Overall, our data suggest that antibody therapeutic development efforts by the biopharmaceutical industry are robust and increasingly successful.