CTCL

This is an open-label, phase 2 randomized study to evaluate the efficacy, safety, pharmacokinetics (PK) and pharmadynamics (PD), of PTX-100 monotherapy at 500 or 1000 mg/m2 in patients with relapsed/refractory Cutaneous T-Cell Lymphoma (CTCL). PTX-100 will be administered by IV infusion over 60 minutes on days 1 to 5 of a 14-day cycle for 4 cycles, then 21 day cycle thereafter. Subjects will be treated or followed up, if subjects discontinue treatment, for up to 18 months.

To evaluate the use of HyBryte, a topical photosensitizing agent, to treat patients with patch/plaque phase cutaneous T-cell lymphoma (mycosis fungoides).

The purpose is to determine if StrataCTX® can be used as a steroid sparing agent for the treatment of cutaneous reactions related to, cutaneous T Cell lymphoma (CTCL) and chemotherapy/immunotherapy treatments than the current standard treatment - topical steroids - in people who are receiving treatment for CTCL, or chemotherapy/immunotherapy for solid/hematologic malignancies. Subjects will have CTCL and are being treated with topical steroids, or being treated with chemotherapy/immunotherapy for another condition and have had cutaneous reactions that have warranted initiation of topical steroids.