Participants with recurrent or refractory peripheral T cell lymphoma (PTCL) and cutaneous T cell lymphoma (CTCL) will be administered with Remitoro 9 microgram per kilogram (mcg/kg), intravenous (IV) infusion, over 1 hour once daily for 5 consecutive days followed by 16 days withdrawal period in a 21 day cycle (up to maximum of 8 cycles). The dosage will be adjusted depending on the condition of the participant. All the participants will be observed for up to 24 weeks prospectively.

Intravenous infusion.

Incidence of ADR, especially for capillary leak syndrome, infusion reaction, rhabdomyolysis, myelosuppression, infection, hepatic dysfunction, visual impairment/color blindness, ischemic heart disease/arrhythmia/cardiac failure, and severe skin disorders will be assessed. An ADR is defined as harmful and unintended responses to the normal administration/use of drugs, in which a causal relationship with the drug in question cannot be ruled.

Percentage of participants with a best overall response of complete response (CR) or partial response (PR) based on physician assessment will be determined. PTCL is evaluated according to revised response criteria for malignant lymphoma (Cheson, 2007). CTCL is evaluated according to clinical endpoints and response criteria in mycosis fungoides and sezary syndrome (Olsen, 2011). CR: Disappearance of all evidence of disease; PR: Regression of measurable disease and no new sites.