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Bevacizumab plus paclitaxel optimization study with interventional maintenance endocrine therapy in advanced or metastatic ER-positive HER2-negative breast cancer-BOOSTER trial, a multicenter randomized phase II study

Bevacizumab plus paclitaxel optimization study with interventional maintenance endocrine therapy in advanced or metastatic ER-positive HER2-negative breast cancer-BOOSTER trial, a multicenter randomized phase II study - JBCRG-M04 (BOOSTER)

Status
Active, not recruiting
Phases
Phase 2
Study type
Interventional
Source
JPRN
Registry ID
JPRN-UMIN000012179
Enrollment
160
Registered
2013-10-31
Start date
2014-01-28
Completion date
Unknown
Last updated
2026-06-29

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

Conditions

Hormone receptor positive, HER2 negative advanced or recurrence (metastatic) breast cancer

Interventions

weekly paclitaxel + bevacizumab endocrine therapy + bevacizumab then back to weekly paclitaxel + bevacizumab therapy

Sponsors

Japan Breast Cancer Research Group (JBCRG)
Lead Sponsor

Eligibility

Sex/Gender
Female

Inclusion criteria

Inclusion criteria: 1. Histologically confirmed adenocarcinoma of the breast 2. Female aged 20-75 years old at getting informed consent 3. HER2 negative disease (IHC 0/1+ or 2+ with FISH negative) 4. Documented estrogen receptor (ER) positive (>=1% by IHC) 5. Inoperative locally advanced or metastatic breast cancer at enrolment 6. Performance status (ECOG): 0-1 at enrolment 7. Life expectancy of at least 3 months from enrolment 8. No prior systemic therapy for recurrent breast cancer (excluding hormone therapy) 9. No prior neo and/or adjuvant chemotherapy with taxane or adjuvant setting with a disease-free interval from completion of the taxane treatment to metastatic diagnosis of >= 12 months 10. Patients with measurable lesion regarding with RECIST criteria or who have evaluable lesion 11. Patients with only bone lesion will be acceptable if the osteolytic lesion has a measurable soft tissue component by MRI or CT 12. No influence on protocol treatment is considered in case prior therapy or examination. 13. Adequate following organ function within 2 weeks before starting treatment. The latest examination results should be adopted and blood transfusion or treatment of hematopoietic factor drugs is not allowed 2 weeks before examination. - Absolute neutrophil count >= 1500 /mm3 or WBC count >= 3000 /mm3 - Platelets >=10 x 10000 /mm3 - Hb >= 9 g/dL - Total bilirubin <= 1.5 mg/dL(except for constitutional jaundice) - AST and ALT <= 100IU/L (<=200IU/L if liver metastasis) - Serum creatinine <= 1.5 mg/dL -Urine dipstick for proteinuria <= 1+ 14. Written informed consent signed by patients before completing any treatment related procedure

Exclusion criteria

Exclusion criteria: (1)Prior therapy with bevacizumab (2) Active infection requiring intrvenous antibiotics at enrollment or infection with active HBV and/or HCV. (3) Pregnancy, lactetion or in case of potentialy pregnancy women Not mind contraception in trial period. (4) Known hypersensitivity to bevacizumab or paclitaxel (5) History of hemoptysis (>= 2.5mL of bright red blood per episord). (6) Use of disulfiram,cyanamide, carmofur or procarbazine Hydrochloride (7) Patients with CNS metastases (except for not symptomatic) (8) Persistent Grade >= 2 sensory neuropathy at enrollment (9) Grade 3 >= hypertension (>= 2 use of antihypertensive drug) 10) Evidence with arterial thromboembolism (Cerebral infarction, Myocardial infarction) or history within 1 year prior to enrollment. (11) Evidence withvenous thromboembolism (deep vein thrombosis, pulmonary embolism) or history within 1 year prior to enrollment. (12) History of GI perforation and/or serious abdominal fistula within 1 year prior to enrollment (13) Cases that the investigator judged as inappropriate as the subject of this clinical study

Design outcomes

Primary

MeasureTime frame
Time to failure of strategy (TFS)

Secondary

MeasureTime frame
2y Overall Survival rate, Overall Survival, Progression Free Survival: PFS, QOL, Biomarker, Safety

Countries

Japan

Contacts

Public ContactJun Fukase

Japan Breast Cancer Research Group (JBCRG) Head office

office@jbcrg.jp03-6264-8873

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026