Comparing Tunlametinib Capsules and Combination Chemotherapy in Advanced NRAS-mutant Melanoma

A total of 165 subjects will be included and randomly assigned to the corresponding treatment group in a 2:1 ratio by Interactive Web Response System（IWRS）. Experimental group: subjects received continuous administration of tunlametinib capsules every 28 days, and the study treatment was terminated until intolerable toxicity, disease progression, withdrawal of informed consent, death, or when the risk outweigh the benefit assessed by the investigators, or when the study was terminated (whichever occurred earlier). Control group: subjects received the combination chemotherapy (paclitaxel +carboplatin, or temozolomide +cisplatin, or dacarbazine +cisplatin, investigator's choice according to the conditions of the subjects) every 28 days until intolerable toxicity, disease progression, withdrawal of informed consent, death, or when the risk outweigh the benefit assessed by the investigator or when the study was terminated (whichever occurred earlier). Efficacy was evaluated by independent radiology review committee and the investigator, respectively. Within 30 days after the last administration of the study drug, the safety of the subjects will also be closely monitored and recorded. After safety visit or the last administration of the study drug (whichever occurs later), subject survival follow-up is conducted every 12 weeks to confirm the survival status and record new anti-tumor treatment until death, lost to follow-up, withdrawal of informed consent, or the end of this study (whichever occurs earlier).