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Safety and Pharmacokinetic Study of MM-302 in Patients With Advanced Breast Cancer

A Phase 1, Multi-Center, Open-Label, Dose-Escalation, Safety, and Pharmacokinetic Clinical Study of Intravenously Administered MM-302 Monotherapy and in Combination With Trastuzumab With or Without Cyclophosphamide in Patients With Advanced HER2 Positive Breast Cancer

Status
UNKNOWN
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01304797
Enrollment
75
Registered
2011-02-25
Start date
2011-03-31
Completion date
2017-01-31
Last updated
2017-01-06

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Breast Cancer

Keywords

MM302, Breast Cancer, Locally advanced/unresectable, metastatic

Brief summary

This study is a Phase 1 and pharmacologic open-label dose-escalation trial using a 3+3 design. Successive cohorts of three or more patients will be treated at escalating doses until a maximum tolerated dose is identified. Once the maximum tolerated dose is identified, an Expansion Cohort will be enrolled at that dose to further characterize safety and pharmacologic endpoints. Additional arms will be enrolled to explore the combination of MM-302 with trastuzumab or trastuzumab plus cyclophosphamide in patients with advanced HER2 positive breast cancer.

Interventions

DRUGMM-302 Monotherapy

Escalating doses of MM-302 as a single agent

DRUGMM-302 in combination with trastuzumab

Escalating MM-302 at an every 4 week dosing schedule, while the dose of trastuzumab is fixed at an every 2 week dosing schedule

DRUGMM-302 in combination with trastuzumab q3w

Escalating MM-302 at an every 3 week dosing schedule, while the dose of trastuzumab is fixed at an every 3 week dosing schedule

DRUGMM-302 in combination with trastuzumab and cyclophosphamide

Escalating MM-302 at an every 3 week dosing schedule, while the dose of trastuzumab and cyclophosphamide is fixed at an every 3 week dosing schedule

Sponsors

Merrimack Pharmaceuticals
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Locally advanced/unresectable or metastatic breast cancer * Eighteen years of age or above * Able to understand and sign an informed consent (or have a legal representative who is able to do so) * Measurable disease according to RECIST v1.1 * ECOG Performance Score of 0 or 1 * Adequate bone marrow, hepatic, renal and cardiac function * Willing to abstain from sexual intercourse or to use an effective form of contraception during the study and for 90 days following the last dose of MM-302

Exclusion criteria

* Patients for whom potentially curative anticancer therapy is available * Active infection or fever \> 38.5°C during screening visits or on the first scheduled day of dosing * Symptomatic CNS disease * Known hypersensitivity to any of the components of MM-302 or who have had hypersensitivity reactions to fully human monoclonal antibodies * Received other recent antitumor therapy * Pregnant or breast feeding * Patients with any other medical or psychological condition, deemed by the Investigator to be likely to interfere with a patient's ability to sign informed consent, cooperate and participate in the study, or interfere with the interpretation of the results

Design outcomes

Primary

MeasureTime frame
The severity and the number of adverse events related to escalating doses of the MM-302.12 months
The severity and the number of adverse events related to escalating doses of the MM-302 in combination with trastuzumab with or without cyclophosphamide12 months

Secondary

MeasureTime frame
Objective response rate of MM-30212 months
The pharmacokinetics of MM-302 as determined by measuring AUC, Tmax and Cmax12 months
Immunogenicity of MM-302 by confirming whether MM-302 elicits an immune response or not12 months

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Mar 19, 2026