Principal Investigator:
Study sponsor: Dualitybio Inc.
Location: HealthPartners Cancer Center at Regions Hospital, HealthPartners Frauenshuh Cancer Center
Phase of Study: I
Purpose of study: This is a first-in-human study that is looking to test the safety and effectiveness of study drug DB-1311 in solid tumors. The study drug is an antibody-drug combination composed of an anti-B7-H3 antibody and P1021 (a topoisomerase I Inhibitor). It is thought that by interfering with the B7-H3 protein, this may inhibit the growth of cancer cells. P1021 works to promote cancer cell death by interrupting DNA replication. The thought is that combination of these will help target and help the body to destroy the tumor cells.
Inclusion Criteria:
– Must be 18 years or older.
– Confirmed advanced / metastatic solid tumor that progressed / relapsed on standard therapy.
– At least one measurable lesion per RECIST 1.1.
– Has life expectancy of at least 3 months.
– ECOG of 0 – 1.
– LVEF of at least 50%.
– Adequate organ function as determined by lab tests.
– Willing to provide existing tumor tissue samples or undergo fresh tumor biopsy for measurement of biomarkers.
– Male, and female subjects of childbearing potential must agree to highly effect methods of contraception.
– Male subjects must not freeze or donate sperm for at least 4 months after last dose of study drug. Female subjects must not donate, or retrieve ova from time of screening through at least 7 months after last dose of study drug.
Several other cohort specific criteria may apply for Phase 2a of the study depending on disease type.
Part 2a:
SCLC (Cohort 1) –
-Prior treatment with at least 1 platinum therapy for 2 cycles.
NSCLC (Cohort 2) –
-Has received treatment with platinum-based chemo, or anti-PD-1/PD-L1 therapy in advanced/metastatic setting. If patient has genomic mutations other than EGFR mutation, patient must also have been treated with at least 1 genotype-directed therapy.
ESCC (Cohort 3) –
-Received at least 1 prior therapy for unresectable disease.
CRPC (Cohort 4) –
-Progressive metastatic CRPC as defined by PCWG3 criteria.
-Has received prior docetaxel.
-Has received prior novel hormone therapy.
Melanoma (Cohort 5) –
-Confirmed Stage 3 or metastatic melanoma
-Must previously have been treated with PD-1 or PD-L1 inhibitor.
-If pt. has BRAF mutant melanoma, must have had prior treatment that included a BRAF gene or MEK inhibitor.
HCC (Cohort 6) –
-Confirmed HCC and has received 1 or 2 prior systemic regimens for metastatic disease.
-Has experienced progression during or after treatment with anti-PD-1/L1 agent given as monotherapy or combination.
Cervical Cancer (Cohort 7) –
-Recurrent or metastatic squamous cell, adenocarcinoma, or adenosquamous histology, and has experienced disease progression during or after treatment with standard of care platinum or doublet therapy.
Other Solid Tumors (Cohort 8) –
-Must have progressed after at least 1 prior standard therapy.
Additional criteria may apply and will be discussed with study team and physician.
Exclusion Criteria:
– Prior treatment with B7-H3 targeted therapy.
– Prior treatment with antibody drug conjugate with topoisomerase inhibitor (such as trastuzumab deruxtecan).
– Has medical history of symptomatic congestive heart failure NYHA class II-IV or serious cardiac arrhythmia requiring treatment.
– Medical history of myocardial infarct or unstable angina within 6 months prior to enrollment.
– Average QTcF > 470 based on ECG results.
– Unable or unwilling to discontinue concomitant medications that are known to prolong QT interval.
– Medical history of interstitial lung disease or has current interstitial lung disease.
– History of underlying pulmonary disorder (pulmonary emboli, severe asthma, COPD, restrictive lung disease, or other significant pulmonary disease that requires supplemental oxygen for treatment).
– Autoimmune, connective tissue, inflammatory disorder where there is suspicion of pulmonary involvement at screening.
– Uncontrolled infection requiring antibiotics, antivirals, or antifungals.
– Known HIV infection.
– Active hepatitis infection. Patients with history of, may be eligible after completing curative treatment, and have viral load below quantification limit.
– Lactating mother, or pregnant within 7 days prior to enrolling into the study.
– Spinal cord compressions or active nervous system metastases that requires corticosteroids. Patients with asymptomatic, radiologically and neurologically stable disease for at least 4 weeks are eligible.
– Has unresolved toxicity from previous anticancer therapy. May be eligible after discussion between treating physician and sponsor.
– Has multiple primary malignancies within 3 years.
– Has substance abuse issues or other medical conditions that, in physician opinion, would interfere with patient’s ability to participate in the study.
Additional exclusion criteria may apply and will be discussed with study team and physician.
Study Contact:
Lisa Wahowske, RN, OCN
(651) 254-1517
Lisa.Wahowske@ParkNicollet.com
