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Trial details imported from ClinicalTrials.gov

For full trial details, please see the original record at https://clinicaltrials.gov/ct2/show/NCT05870748




Registration number
NCT05870748
Ethics application status
Date submitted
12/05/2023
Date registered
23/05/2023
Date last updated
19/04/2024

Titles & IDs
Public title
REFRaME-O1: A Study to Investigate the Efficacy and Safety of Luveltamab Tazevibulin Versus Investigator's Choice (IC) Chemotherapy in Women With Ovarian Cancer (Including Fallopian Tube or Primary Peritoneal Cancers) Expressing FOLR1
Scientific title
REFRaME-O1: A Phase 2/3 Open-label Study Evaluating the Efficacy and Safety of Luveltamab Tazevibulin (STRO-002) Versus Investigator's Choice (IC) Chemotherapy in Women With Relapsed Platinum-resistant Epithelial Ovarian Cancer (Including Fallopian Tube or Primary Peritoneal Cancers) Expressing Folate Receptor Alpha (FOLR1)
Secondary ID [1] 0 0
GOG-3086
Secondary ID [2] 0 0
STRO-002-GM3
Universal Trial Number (UTN)
Trial acronym
Linked study record

Health condition
Health condition(s) or problem(s) studied:
Ovarian Cancer 0 0
Epithelial Ovarian Cancer 0 0
Fallopian Tube Cancer 0 0
Primary Peritoneal Cancer 0 0
Platinum-resistant Ovarian Cancer 0 0
Condition category
Condition code
Cancer 0 0 0 0
Ovarian and primary peritoneal
Cancer 0 0 0 0
Womb (Uterine or endometrial cancer)
Cancer 0 0 0 0
Stomach

Intervention/exposure
Study type
Interventional
Description of intervention(s) / exposure
Treatment: Drugs - Luveltamab tazevibulin
Treatment: Drugs - Pegfilgrastim
Treatment: Drugs - Gemcitabine
Treatment: Drugs - Paclitaxel
Treatment: Drugs - Pegylated liposomal doxorubicin
Treatment: Drugs - Topotecan

Experimental: Luveltamab tazevibulin dose Cohort A - 5.2 mg/kg q3w with prophylactic pegfilgrastim for 2 cycles followed by 4.3 mg/kg q3w for Cycle 3 onwards

Experimental: Luveltamab tazevibulin dose Cohort B - 4.3 mg/kg q3w

Active Comparator: Part 2: IC Chemotherapy - Gemcitabine 1000 mg/m2 on Days 1, 8, and 15 q4w or 1000mg/m2 on Days 1 and 8 q3w
Paclitaxel 80 mg/m2 on Days 1, 8, and 15 q4w
Pegylated Liposomal Doxorubicin (PLD) 40 mg/m2 q4w
Topotecan 4.0 mg/m2on Day 1, 8, and 15 q4w or 1.25 mg/m2 on Days 1 - 5 q3w


Treatment: Drugs: Luveltamab tazevibulin
Luveltamab tazevibulin is an antibody-drug conjugate targeting FOLR1. It consists of an IgG1 antibody (SP8166) conjugated to cleavable 3-3-aminophenyl hemiasterlin drug-linkers at 4 sites. The active warhead (SC209) inhibits tubulin polymerization leading to mitotic arrest and cell death.

Treatment: Drugs: Pegfilgrastim
Pegfilgrastim or pegylated G-CSF is approved and used to decrease the incidence of infection in patients receiving myelosuppressive anti-cancer drugs. It increases the proliferation and differentiation of neutrophils.

Treatment: Drugs: Gemcitabine
Gemcitabine is a chemotherapy regimen used for treating platinum-resistant ovarian cancer. It inhibits ribonucleotide reductase and DNA polymerase, hindering tumor cell growth and promoting cell death.

Treatment: Drugs: Paclitaxel
Paclitaxel is a chemotherapy regimen approved for treatment of previously treated ovarian cancer. It stabilizes microtubules, inhibiting tumor cell replication.

Treatment: Drugs: Pegylated liposomal doxorubicin
Pegylated liposomal doxorubicin is a chemotherapy regimen approved for treating platinum-resistant ovarian cancer. It inhibits DNA and RNA synthesis by intercalating between base pairs, obstructing tumor cell division.

Treatment: Drugs: Topotecan
Topotecan is a chemotherapy regimen approved for treatment of metastatic ovarian cancer after disease progression on or after initial or subsequent chemotherapy. It binds to topoisomerase I inducing DNA breaks and subsequent tumor cell apoptosis.
Intervention code [1] 0 0
Treatment: Drugs
Comparator / control treatment
Control group

Outcomes
Primary outcome [1] 0 0
Progression Free Survival (PFS)
Timepoint [1] 0 0
up to 24 months
Primary outcome [2] 0 0
Objective Response Rate (ORR)
Timepoint [2] 0 0
up to 24 months
Secondary outcome [1] 0 0
Overall Survival (OS)
Timepoint [1] 0 0
up to 24 months
Secondary outcome [2] 0 0
Duration of Response (DOR)
Timepoint [2] 0 0
up to 24 months
Secondary outcome [3] 0 0
Incidence and severity of adverse events [Safety and tolerability]
Timepoint [3] 0 0
up to 24 months
Secondary outcome [4] 0 0
Quality of life (QLQ-OV28)
Timepoint [4] 0 0
up to 24 months

Eligibility
Key inclusion criteria
1. High grade serous epithelial ovarian cancer, fallopian tube or primary peritoneal
cancer

2. Age = 18 years

3. ECOG performance status 0 to 1

4. Positive FOLR1 expression per central laboratory testing

5. Relapsed platinum-resistant epithelial ovarian cancer and received a total of 1 to 3
prior regimens

6. Prior bevacizumab treatment is required, if labeled and available as standard of care
per institutional guidelines, unless subject has documented contraindication

7. At least 1 measurable target lesion per RECIST v1.1

8. Adequate organ function
Minimum age
18 Years
Maximum age
No limit
Sex
Females
Can healthy volunteers participate?
No
Key exclusion criteria
1. Low grade (Grade 1) ovarian carcinoma, clear cell, mucinous, endometrioid,
sarcomatous, and mixed histology ovarian carcinomas

2. Prior treatment with a FOLR1- targeting ADCs or with ADCs that contain a tubulin
inhibitor

3. Primary platinum-refractory disease

4. History of severe allergic or anaphylactic reactions to monoclonal antibody therapy or
to antibody-related fusion protein treatment

5. Pre-existing clinically significant ocular disorders, severe chronic obstructive
pulmonary disease or asthma, clinically significant cardiac or cerebrovascular
disease, or other significant concurrent, uncontrolled medical condition

6. Previous solid organ transplantation

7. History or clinical signs of meningeal or active central nervous system involvement

8. Concurrent participation in another therapeutic treatment trial

Study design
Purpose of the study
Treatment
Allocation to intervention
Randomised controlled trial
Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
Methods used to generate the sequence in which subjects will be randomised (sequence generation)
Masking / blinding
Open (masking not used)
Who is / are masked / blinded?



Intervention assignment
Parallel
Other design features
Phase
Phase 2/Phase 3
Type of endpoint/s
Statistical methods / analysis

Recruitment
Recruitment status
Recruiting
Data analysis
Reason for early stopping/withdrawal
Other reasons
Date of first participant enrolment
Anticipated
Actual
12/07/2023
Date of last participant enrolment
Anticipated
Actual
Date of last data collection
Anticipated
1/02/2026
Actual
Sample size
Target
600
Accrual to date
Final
Recruitment in Australia
Recruitment state(s)
NSW
Recruitment hospital [1] 0 0
Chris O'Brien Lifehouse - Camperdown
Recruitment hospital [2] 0 0
Prince of Wales Hospital - Randwick
Recruitment hospital [3] 0 0
Westmead Hospital - Westmead
Recruitment postcode(s) [1] 0 0
2050 - Camperdown
Recruitment postcode(s) [2] 0 0
2031 - Randwick
Recruitment postcode(s) [3] 0 0
2145 - Westmead
Recruitment outside Australia
Country [1] 0 0
United States of America
State/province [1] 0 0
Arizona
Country [2] 0 0
United States of America
State/province [2] 0 0
California
Country [3] 0 0
United States of America
State/province [3] 0 0
District of Columbia
Country [4] 0 0
United States of America
State/province [4] 0 0
Florida
Country [5] 0 0
United States of America
State/province [5] 0 0
Maryland
Country [6] 0 0
United States of America
State/province [6] 0 0
Massachusetts
Country [7] 0 0
United States of America
State/province [7] 0 0
Minnesota
Country [8] 0 0
United States of America
State/province [8] 0 0
Nebraska
Country [9] 0 0
United States of America
State/province [9] 0 0
New Mexico
Country [10] 0 0
United States of America
State/province [10] 0 0
New York
Country [11] 0 0
United States of America
State/province [11] 0 0
Ohio
Country [12] 0 0
United States of America
State/province [12] 0 0
Oklahoma
Country [13] 0 0
United States of America
State/province [13] 0 0
Oregon
Country [14] 0 0
United States of America
State/province [14] 0 0
Pennsylvania
Country [15] 0 0
United States of America
State/province [15] 0 0
Texas
Country [16] 0 0
United States of America
State/province [16] 0 0
Virginia
Country [17] 0 0
Canada
State/province [17] 0 0
Quebec
Country [18] 0 0
Canada
State/province [18] 0 0
Toronto
Country [19] 0 0
Israel
State/province [19] 0 0
Ramat Gan
Country [20] 0 0
Korea, Republic of
State/province [20] 0 0
Gyeonggi-do
Country [21] 0 0
Korea, Republic of
State/province [21] 0 0
Daegu
Country [22] 0 0
Korea, Republic of
State/province [22] 0 0
Incheon
Country [23] 0 0
Korea, Republic of
State/province [23] 0 0
Seoul
Country [24] 0 0
Singapore
State/province [24] 0 0
Novena
Country [25] 0 0
Singapore
State/province [25] 0 0
Singapore

Funding & Sponsors
Primary sponsor type
Commercial sector/Industry
Name
Sutro Biopharma, Inc.
Address
Country
Other collaborator category [1] 0 0
Other
Name [1] 0 0
GOG Foundation
Address [1] 0 0
Country [1] 0 0
Other collaborator category [2] 0 0
Other
Name [2] 0 0
European Network of Gynaecological Oncological Trial Groups (ENGOT)
Address [2] 0 0
Country [2] 0 0
Other collaborator category [3] 0 0
Other
Name [3] 0 0
Asia-Pacific Gynecologic Oncology Trials Group (APGOT)
Address [3] 0 0
Country [3] 0 0

Ethics approval
Ethics application status

Summary
Brief summary
A Phase 2/3 study to investigate the efficacy and safety of luveltamab tazevibulin versus IC
chemotherapy in women with ovarian cancer (including fallopian tube or primary peritoneal
cancers) expressing FOLR1.
Trial website
https://clinicaltrials.gov/ct2/show/NCT05870748
Trial related presentations / publications
Public notes

Contacts
Principal investigator
Name 0 0
Address 0 0
Country 0 0
Phone 0 0
Fax 0 0
Email 0 0
Contact person for public queries
Name 0 0
Craig Berman, MD
Address 0 0
Country 0 0
Phone 0 0
650-801-6417
Fax 0 0
Email 0 0
STRO-002ClinDev@sutrobio.com
Contact person for scientific queries



Summary Results

For IPD and results data, please see https://clinicaltrials.gov/ct2/show/NCT05870748