A Study of Disitamab Vedotin in Previously Treated Solid Tumors That Express HER2

Inclusion Criteria: * Cohort 1: Head and neck cancer (HNC) * Must have pathologically-documented carcinoma of the head and neck with primary tumor site arising from the oral cavity, salivary gland, oropharynx, hypopharynx, and larynx; tumors arising from the nasopharynx are excluded. * Unresectable locally recurrent or metastatic stage disease * Prior therapies: * Participants must have disease progression after treatment with a platinum-based therapy * Cohort 2: Non-small cell lung cancer (NSCLC) * Pathologically documented NSCLC * Unresectable locally-advanced or metastatic stage disease * Prior therapies * Must have progressed during or after a platinum-based therapy for LA/metastatic disease or, within 6 months of platinum-based adjuvant, neoadjuvant, or concomitant chemoradiotherapy for early or locally-advanced stage disease * Must have received prior anti-PD(L)1 therapy, unless contraindicated * Participants with known AGAs must have received appropriate targeted therapy, where available. * No more than 2 prior lines of cytotoxic chemotherapy for advanced disease * Cohort 3: Ovarian Cancer * Pathologically documented epithelial cancers of ovarian, fallopian tube, or peritoneal origin * Unresectable locally-advanced or metastatic stage disease * Prior therapies * Must have platinum resistant disease (6 months or less between the completion of platinum-based treatment and identification of recurrence) * Must not have r…