Study of BDC-3042 as Single Agent and in Combination With Pembrolizumab in Patients With Advanced Malignancies

• Sponsor: Bolt Biotherapeutics, Inc. (Industry)
• Overall Status: Recruiting
• CT.gov ID: NCT06052852
• Collaborator: (none)
• Enrollment: 167
• Locations: 3
• Arms: 2
• Anticipated Duration (Months): 53
• Patients Per Site: 55.7
• Patients Per Site Per Month: 1.1

Study Details

Study Description

Brief Summary

A first-in-human study using BDC-3042 as a single agent and in combination with pembrolizumab in patients with advanced malignancies

Condition or Disease	Intervention/Treatment	Phase
Triple Negative Breast Cancer; Clear Cell Renal Cell Carcinoma; Ovarian Cancer; Head and Neck Cancer; Colorectal Cancer; Non-small Cell Lung Cancer	Drug: BDC-3042; Drug: Pembrolizumab	Phase 1/Phase 2

Detailed Description

This study has four parts. Part 1 is a dose escalation of BDC-3042 as a single agent to determine the maximum tolerated dose (MTD), recommended Phase 2 dose (RP2D), or maximum protocol dose (MPD) recommended for Part 3. In Part 3, the selected dose will be administered as monotherapy to patients with selected advanced malignancies. Part 2 is a dose escalation of BDC-3042 in combination with pembrolizumab to determine the maximum tolerated dose (MTD), recommended Phase 2 dose (RP2D), or maximum protocol dose (MPD) recommended for Part 4. In Part 4, the selected dose will be administered in combination with pembrolizumab to patients with selected advanced malignancies.

Study Design

• Study Type: Interventional
• Anticipated Enrollment: 167 participants
• Allocation: Non-Randomized
• Intervention Model: Parallel Assignment
• Intervention Model Description: Multiple ascending dose and dose-expansion of BDC-3042 administered as a single agent or in combination with pembrolizumabMultiple ascending dose and dose-expansion of BDC-3042 administered as a single agent or in combination with pembrolizumab
• Masking: None (Open Label)
• Primary Purpose: Treatment
• Official Title: A Phase 1/2, First-in-Human, Dose Escalation and Expansion Study of BDC-3042 as a Single Agent and in Combination With Pembrolizumab in Patients With Advanced Malignancies
• Anticipated Study Start Date: Oct 1, 2023
• Anticipated Primary Completion Date: Mar 1, 2026
• Anticipated Study Completion Date: Mar 1, 2028

Arms and Interventions

Arm	Intervention/Treatment
Experimental: Single agent BDC-3042 Escalating doses followed by expansion targeting advanced malignancies	Drug: BDC-3042; Dectin-2 agonist antibody
Experimental: Combination BDC-3042 plus pembrolizumab Escalating doses followed by expansion targeting advanced malignancies	Drug: BDC-3042; Dectin-2 agonist antibody; Drug: Pembrolizumab; Drug which blocks checkpoint proteins from binding with their partner proteins, allowing T cells to kill cancer cells; Other Names: Keytruda Immune checkpoint inhibitor

Outcome Measures

Primary Outcome Measures

1. Incidence of adverse events (AEs) and serious adverse events (SAEs) graded according to CTCAE v5.0 [2 years]

   Escalation period

2. Incidence and nature of AEs considered by the Investigator or Sponsor to be clinically relevant, attributable to study treatment, and meeting dose-limiting toxicity (DLT) criteria [Up to 21 days]

   Escalation period

3. Objective response rate (ORR) using RECIST 1.1 [2 years]

   Expansion period

Secondary Outcome Measures

1. Objective response rate (ORR) using RECIST 1.1 [2 years]

   Escalation period

2. Duration of response (DOR) [2 years]

   Escalation and expansion periods

3. Disease control rate (DCR) of confirmed complete response (CR), partial response (PR), or stable disease (SD) lasting 4 or more weeks [2 years]

   Escalation and expansion periods

4. Progression Free Survival (PFS) [2 years]

   Escalation and expansion periods

5. Best overall response (CR, PR, SD, progressive disease) [2 years]

   Expansion period

6. Incidence of adverse events (AEs) and serious adverse events (SAEs) graded according to CTCAE v5.0 [2 years]

   Expansion period

7. PK (Cmax) of BDC-3042 [2 years]

   Escalation and expansion periods

8. PK (Cmin) of BDC-3042 [2 years]

   Escalation and expansion periods

9. PK (AUC0-t) of BDC-3042 [2 years]

   Escalation and expansion periods

10. PK (AUC0-inf) of BDC-3042 [2 years]

    Escalation and expansion periods

11. PK (CL) of BDC-3042 [2 years]

    Escalation and expansion periods

12. PK (Vc or Vss) of BDC-3042 [2 years]

    Escalation and expansion periods

13. PK (Terminal t1/2) of BDC-3042 [2 years]

    Escalation and expansion periods

14. Incidence of anti-BDC-3042 antibodies [2 years]

    Escalation and expansion periods

Eligibility Criteria

Criteria

• Ages Eligible for Study: 18 Years and Older
• Sexes Eligible for Study: All
• Accepts Healthy Volunteers: No

Inclusion Criteria:

1. Able to understand and sign the informed consent form

2. Age 18 years or older at the time of informed consent

3. Has disease that is measurable by Response Evaluation Criteria in Solid Tumors (RECIST) v.1.1

4. Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1

5. Subjects enrolled in Part 1 and Part 2 dose escalation cohorts must have:

1. Histologically/cytologically confirmed triple-negative breast cancer (TNBC), clear cell renal cell cancer (ccRCC), ovarian cancer, head and neck cancer, colorectal cancer, or non-small cell lung cancer (NSCLC) that is metastatic or unresectable with tumor progression after standard therapy who have no options for standard therapies which are known to confer clinical benefit. Subjects with ovarian cancer must have platinum resistant or platinum-refractory tumors.

1. Subjects enrolled in Part 3 and Part 4 dose expansion cohorts must have histologically/cytologically confirmed metastatic or unresectable TNBC or NSCLC with tumor progression after standard therapy who have no options for standard therapies which are known to confer clinical benefit.

2. Adequate organ function defined as follows:

3. Hematology: i. Absolute neutrophil count ≥ 1500 cells/mm3; ii. Platelet count ≥ 75,000 cells/mm3; iii. Hemoglobin ≥ 9 g/dL (and without transfusion within 7 days)

4. Renal: creatinine clearance ≥ 30 mL/min by Cockcroft-Gault estimate

5. Coagulation: Prothrombin time or international normalized ratio and activated partial thromboplastin time ≤ 1.5 × upper limit of normal (ULN) (unless receiving anticoagulation therapy)

6. Hepatic: i. Aspartate aminotransferase and alanine transaminase (ALT) ≤ 3 × ULN (or ≤ 5 × ULN in subjects with known hepatic metastases); ii. Total bilirubin ≤ 1.5 × ULN (isolated value > 1.5 × ULN is acceptable if direct bilirubin is < 35% of total)

7. Developed tumor progression after treatment with all standard therapies or have no appropriate available therapies

8. Expected life expectancy of > 12 weeks per the Investigator

9. Women of childbearing potential (WOCBP) should use a highly effective contraceptive measure (a method that can achieve a failure rate of less than 1% per year) during treatment and until 4 weeks after the end treatment.

10. Potent men that are partners of WOCBP must be willing to use condoms in combination with a second highly effective method of female contraception and agree not to donate sperm from screen through at least 4 months after last dose of study treatment. A male partner will be considered as potent unless surgically sterilized (with appropriate documentation of sterility).

Exclusion Criteria:

1. Active systemic yeast infection within 4 weeks before study treatment

2. Prior hospitalization for asthma during past year

3. Central nervous system metastases except for disease that is asymptomatic, clinically stable, and has not required steroids for at least 14 days before starting study treatment

4. Cardiac disease including:

5. Congestive heart failure New York Heart Association classes II-IV

6. QTcF prolongation > 450 milliseconds (ms) based on a 12-lead electrocardiogram (ECG) in triplicate or > 480 ms for subjects with bundle branch block

7. Serious or uncontrolled cardiac arrhythmia within 6 months before starting study treatment

8. Myocardial infarction, unstable angina pectoris, or coronary angioplasty, stenting, or surgery within 6 months before starting study treatment

9. Serious or uncontrolled hypertension (≥ 180 mmHg systolic or ≥ 120 mmHg diastolic) within 6 months before starting study treatment

10. Pericarditis or pericardial effusion that is symptomatic within 6 months before starting study treatment

11. Pulmonary disease including idiopathic pulmonary fibrosis, noninfectious interstitial lung disease, pneumonitis, chronic obstructive pulmonary disease (requiring daily treatment for dyspnea, oxygen therapy on an ongoing basis, or hospitalization within the past 6 months)

12. Hepatic disease resulting in symptomatic ascites, encephalopathy, coagulopathy, esophageal/gastric varices, or persistent jaundice

13. Arterial thrombotic event, stroke, or transient ischemia attack within 6 months before starting study treatment

14. Bleeding diathesis or uncontrolled bleeding within 7 days before starting study treatment

15. Bone marrow transplant or solid organ transplant

16. Infection including:

17. Disease requiring systemic therapy within 7 days before starting study treatment

18. Ongoing COVID-19 as determined by viral testing

19. Active human immunodeficiency virus (HIV) infection as determined at screening

20. Active hepatitis B infection as determined at screening

21. Active hepatitis C infection as determined at screening

22. Autoimmune disease requiring systemic disease-modifying or immunosuppressive therapy within 2 years before starting study treatment. Exceptions include disease managed with only replacement therapies (eg, thyroxine, etc.)

23. History of hemophagocytic lymphohistiocytosis/macrophage activation syndrome

24. Malignancy within 2 years before starting study treatment other than the disease under study. Exceptions include indolent or definitively treated disease not expected to require treatment during the study, affect the safety of subjects, or affect the endpoints of the trial

25. Any medical condition requiring corticosteroids (> 10 mg daily oral prednisone or equivalent) or other systemic immunosuppressive therapy within 28 days before starting study treatment. Exception: Intermittent or sporadic use of inhaled or topical steroids is allowed

26. Residual toxicity from previous treatment including:

27. Toxicity related to prior treatment not resolved to Grade 1

28. Neuropathy Grade > 2 Note: Exceptions to the above criteria include toxicities that do not pose a risk to vital organ systems (eg, alopecia) or toxicities that are stable as managed by replacement therapies (eg, hypothyroidism)

29. Subjects receiving immune checkpoint inhibitor: Toxicity Grade 3 related to prior immunotherapy and leading to treatment discontinuation

30. Any investigational agent within 28 days before starting study treatment or within 5 estimated elimination half-lives, whichever is shorter

31. Radiation therapy within 14 days before starting study treatment

32. History of severe hypersensitivity to any ingredient of BDC-3042 or study treatment (as applicable for combination study treatment)

33. Received live/attenuated virus vaccine within 28 days before starting study treatment

34. Major surgery within 28 days of starting study treatment (consult with Medical Monitor)

35. Actively enrolled in another clinical study, unless it is an observational (noninterventional) clinical study or the follow-up component of an interventional study

36. Patient is a lactating mother or pregnant as confirmed by pregnancy tests within 7 days prior to start of study treatment

37. Patient is unwilling or unable to follow protocol requirements

38. Ongoing bowel perforation or presence of bowel fistula or intra-abdominal abscess

39. Any condition that, in the opinion of the Investigator, would interfere with evaluation of BDC-3042 or interpretation of the patient's safety or study results

Contacts and Locations

Locations

	Site	City	State	Country	Postal Code
1	NEXT Oncology	Austin	Texas	United States	78758
2	NEXT Oncology	San Antonio	Texas	United States	78229
3	NEXT Virginia	Fairfax	Virginia	United States	22031

Sponsors and Collaborators

• Bolt Biotherapeutics, Inc.

Investigators

• Study Director: Bolt Clinical Development, Bolt Biotherapeutics

Study Documents (Full-Text)

None provided.

More Information

Publications

None provided.

• Responsible Party: Bolt Biotherapeutics, Inc.
• ClinicalTrials.gov Identifier: NCT06052852
• Other Study ID Numbers: BBI-20233042
• First Posted: Sep 25, 2023
• Last Update Posted: Sep 25, 2023
• Last Verified: Sep 1, 2023

• Studies a U.S. FDA-regulated Drug Product: Yes
• Studies a U.S. FDA-regulated Device Product: No
• Additional relevant MeSH terms: Carcinoma, Renal Cell; Triple Negative Breast Neoplasms; Pembrolizumab; Immune Checkpoint Inhibitors

Study Results

No Results Posted as of Sep 25, 2023