This is an open-label, multi-center Phase 1/2 study of oral LP-168 in patients with CLL/SLL and NHL who have failed or are intolerant to standard of care.

This study includes 2 parts: phase 1a (LP-168 monotherapy dose escalation) and phase 1b (LP-168 dose expansion). In phase 1a, patients will be enrolled using an 3+3 design. The starting dose of LP-168 in oral tablet form is 100 mg/day (e.g., 100 mg once daily [QD]). Once the MTD and/or RP2D is identified in phase 1a dose escalation, enrollment will continue to phase 1b dose expansion. Cycle length will be 28 days.

Key Inclusion Criteria:

• Per 2017 revised WHO lymphoma classification criteria, subject must have either:

Diagnosed with relapsed or refractory DLBCL or FL and require treatment in the opinion of the Investigator and have received 2 lines SOC.

Diagnosed with relapsed or refractory non-Hodgkin's lymphoma associated with B-cell proliferation (such as CLL\ SLL \ MCL \ MZL \ WM, etc.) in need of treatment in the opinion of the Investigator and have received 1 line SOC.

• Adequate hematologic function.
• Adequate hepatic and renal function.
• Ability to receive study drug therapy orally and willing to receive examinations.
• Willingness of men and women of reproductive potential (defined as following menarche and not postmenopausal [and 2 years of non-therapy-induced amenorrhea] or surgically sterile) to observe conventional and effective birth control.

Key Exclusion Criteria:

• According to the 2017 revised WHO Lymphoma Classification Criteria, patients diagnosed with the following diseases: Burkitt lymphoma or Burkitt-like lymphoma, lymphoblastic lymphoma/leukemia, and post-transplant lymphoproliferative disease(PTLD).
• Prior malignancy (other than the disease under study) within the past 3 years, except for curatively treated basal or squamous cell skin cancer, carcinoma in situ of the cervix or breast cancer.
• Subjects who have received the following treatments within 4 weeks or 5 half-lives before the first dose of LP-168:

Antitumor therapies including myelosuppressive chemotherapy, targeted therapy, biological therapy and/or immunotherapy; Any investigational treatment; Patients who have undergone major surgery, severe trauma or radiotherapy.

• Subjects who have received the following treatments within 2 weeks before the first dose of LP-168:

Steroids or traditional herbal medicine for antitumor purposes; Strong and moderate CYP3A inhibitors and inducers; All drugs that may cause QTc interval prolongation or torsional tachycardia.

• Disease states where clinical manifestations may be difficult to control, including HIV, HBV, HCV, syphilis positive or active bacterial and fungal infections; Disease affects the central nervous system with obvious symptoms; Autoimmune hemolytic anemia or Idiopathic thrombocytopenic purpura. Any gastrointestinal conditions that may severely affect the study drug absorption or pharmacokinetic parameters.
• Subjects who cannot tolerate urine collection, venipuncture, lymph node biopsy, and bone marrow aspiration.