The purpose of this study is to determine whether sirolimus reduces the symptoms of cutaneous T-cell lymphoma (CTCL) and whether it causes any side effects.

This will be a prospective, non-randomized, open label study of topical sirolimus for the treatment of CTCL recurrent or refractory to at least one previous skin directed treatment. The purpose will be evaluation of safety and anti-tumor response as evaluated by serial skin examinations.

Study duration:

For subjects with at least partial remission, treatment will be continued for a maximum of 6 months. All subjects will be followed for 6 months from the time of discontinuation of the study drug or until progression of disease or until a new treatment for CTCL will be started.

Inclusion Criteria:

• Clinically and histologically confirmed diagnosis of CTCL (early stage disease with patches and/or thin plaques covering up to 10%, stage IA)
• Relapsed or refractory disease after at least one standard skin directed treatment including corticosteroids, topical bexarotene, phototherapy
• All subjects must be 18 years of age or older
• Life expectancy ≥ 6 months, determined by the treating physician
• Signed informed consent

Exclusion Criteria:

• Patients currently receiving anticancer therapies or who have received anticancer therapies within 4 weeks of the start of study drug (including topical or systemic glucocorticosteroids, chemotherapy, radiation therapy, antibody based therapy, etc.)
• Prior treatment with any investigational drug within the preceding 4 weeks
• Patients receiving chronic, systemic treatment with corticosteroids or another immunosuppressive agent.
• Female patients who are pregnant or breast feeding, or adults of reproductive potential who are not using effective birth control methods. Adequate contraception (oral contraceptives ("the pill"), intrauterine devices (IUDs), contraceptive implants under the skin, or contraceptive injections, diaphragms with spermicide and condoms with foam) must be used throughout the trial and for 8 weeks after the last dose of study drug (women of childbearing potential must have a negative urine within 7 days prior to administration of sirolimus).
• Patients who have received prior treatment with an mTOR inhibitor (e.g., sirolimus, temsirolimus, everolimus).
• Patients with a known hypersensitivity to sirolimus or other rapamycin (e.g., everolimus, temsirolimus) or to its excipient
• History of noncompliance to medical regimens
• Patients unwilling to or unable to comply with the protocol