This is an open label, phase II study of TGR-1202 in patients with relapsed or refractory Grade 1, 2, or 3A follicular lymphoma (FL). FL is the most common subtype of indolent lymphoma. The prognosis of FL depends on the histologic grade, stage, treatment and age of the patient. More recently, efforts have been made to find novel regimens for the treatment of relapsed FL that do not contain non-specific cytotoxic agents.