Three trials show ultra-low-dose checkpoint inhibitors retain efficacy with reduced toxicity and dramatically lower costs. DELII and Patil et al. trials tested low-dose nivolumab in solid tumors and HNSCC; NIVIPIT tested intratumoral low-dose ipilimumab in melanoma.
New research highlights circulating tumor DNA as a prognostic tool in early-stage triple-negative breast cancer, while leronlimab demonstrates long-term survival signals in heavily pretreated metastatic patients through CCR5 receptor blockade.
Phase III KEYNOTE-B15 trial demonstrates enfortumab vedotin plus pembrolizumab significantly improves event-free survival and pathologic complete response rates compared with cisplatin-based chemotherapy in muscle-invasive bladder cancer.
Neoadjuvant pembrolizumab achieved 71% pathologic complete response in desmoplastic melanoma patients, while lower-dose ipilimumab combination therapy showed improved survival and fewer side effects in advanced melanoma treatment.
