A Study of TBI-1401(HF10) in Patients With Solid Tumors With Superficial Lesions

This is an open label, non-randomized, dose escalation Phase I study evaluating the repeated intratumoral administrations of the TBI-1401(HF10), a spontaneously attenuated mutant of HSV-1, in patients with solid tumors with superficial lesions (e.g., malignant melanoma and squamous cell carcinoma of the skin). The study will evaluate the safety and tolerability of repeated intratumoral administrations of TBI-1401(HF10) at dose levels of 1 x 10\^6 TCID50/dose (cohort 1) and 1 x 10\^7 TCID50/dose (cohort 2) in Japanese patients. Three patients will be enrolled in each cohort. Patients in the each cohort will receive a total of four intratumoral administrations in the same lesion.