[Consensus on clinical diagnosis, treatment, and prevention of chemotherapy-induced neutropenia in China (2026 edition)].

Chemotherapy-induced neutropenia (CIN) is a common hematological adverse event and dose-limiting toxicity of chemotherapy. CIN may lead to dose reduction or delay of chemotherapeutic agents, febrile neutropenia (FN), and severe infections, which results in increased treatment costs, reduced chemotherapy efficacy, and even life-threatening complications. Therefore, standardized assessment of the risk of CIN in cancer patients, timely identification and intervention of FN, and appropriate prevention and treatment are essential to reduce CIN-related complications, improve patients' quality of life, and enhance chemotherapy outcomes. Based on the "Consensus on clinical diagnosis, treatment, and prevention of chemotherapy-induced neutropenia in China (2023 edition)", the Committee of Medical Oncology and the Committee of Neoplastic Supportive-care of China Anti-Cancer Association have thoroughly reviewed and summarized the latest evidence and clinical practices worldwide. This update puts forward 11 recommendations regarding the definition, grading, risk assessment, prevention, and treatment strategies for CIN, aiming to provide more timely and standardized guidance for Chinese oncologists in the diagnosis, treatment, and prevention of CIN.