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A Phase II Study of Trastuzumab plus S-1 in Patients with Advanced or Recurrent HER2 positive Breast Cancer

A Phase II Study of Trastuzumab plus S-1 in Patients with Advanced or Recurrent HER2 positive Breast Cancer - A Phase II Study of Trastuzumab plus S-1 in Patients with Advanced or Recurrent HER2 positive Breast Cancer

Status
Active, not recruiting
Phases
Phase 2
Study type
Interventional
Source
JPRN
Registry ID
JPRN-UMIN000001408
Enrollment
30
Registered
2008-10-01
Start date
2008-09-01
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

Breast cancer

Interventions

S-1 80mg/m2 twice daily on days1-14 every 3 weeks. Trastuzumab 6mg/kg (First time 8mg/kg) i.v., every 3 weeks

Sponsors

Gunma Breast Clinical Conference Study Group(GBCCSG)
Lead Sponsor

Eligibility

Sex/Gender
Female

Inclusion criteria

Inclusion criteria: 1) Histologically diagnosed breast cancer 2) Advanced or recurrence breast cancer with measurable lesions 3) Diagnosed HER2 over expression (IHC score 3+ or FISH positive) in primary or metastatic site 4) 6 months apart from the previous trastuzumab administration in adjuvant or neoadjuvant 5) No prior radiotherapy 6) Age 20 to 80 years 7) ECOG PS 0 to 2 8) Expected survival time: more than 3 months 9) LVEF more than 55% 10) Required baseline laboratory parameters WBC >= 3,500 /mm3 (or Neu >= 1,500 / mm3 ) and <= 12,000mm3 Plt >= 100,000/mm3 Hb >= 9.0g/dl AST <= 2.5 times ULN and ALT <= 2.5 times ULN T-Bil <= 1.5mg/dl Cre <= 1.2mg/dl or Ccr >= 60ml/min (Cockcroft-Gault model) 11) Written informed consent 12) Possible to take orally

Exclusion criteria

Exclusion criteria: 1) Male breast cancer 2) Necessary to continue treatment with warfarin potassium 3) Severe complications [ulcer which needs blood transfusion, uncontrolled diabetes mellitus, interstitial lung disease, pulmonary fibrosis, cerebral thrombosis, cerebral hemorrhage, subarachnoid hemorrhage, ischemia attack, encephalosis, stenocardia, myocardial infarction, uncontrolled congestive heart failure or arrhythmia, intestinal tract paralysis, ileus, neurodegeneration disease, hepatic insufficiency, cirrhosis, renal insufficiency] 4) Active double cancer 5) Inflammatory breast cancer or symptomatic brain metastasis 6) Patients who have only the lesion which caught the radiation exposure 7) Patients who received previous treatment with oral fluoropyrimidines within 12 months 8) internal use of flucytosyne 9) doctors decision for excluion

Design outcomes

Primary

MeasureTime frame
Response Rate

Secondary

MeasureTime frame
Safety Overall survial Progression free survival Time to treatment failure Biomarkers

Countries

Japan

Contacts

Public ContactJun Horiguchi

Gunma Breast Clinical Conference Study Group(GBCCSG) Secretariat Division (Department of Thoracic Visceral Organ Surgery , Gunma University Graduate Scho

Outcome results

None listed

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