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AFTER trial

AFTER trial - Aromatase inhibitor or fulvestrant after becoming to resistance of ethinylestradiol in postmenopausal women with metastatic breast cancer - prospective comparing trial

Status
Recruiting
Phases
Phase 2
Study type
Interventional
Source
JPRN
Registry ID
JPRN-UMIN000013890
Enrollment
60
Registered
2014-05-07
Start date
2014-05-07
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

metastatic postmenopausal breast cancer with refractory to estrogen therapy

Interventions

One of the 3rd generation aromatase inhibitors, such as Anastrozole (1mg),Letrozole (2.5mg) or Exemestane (25mg) is orally administered once a day. Fulvestrant(500mg)is intramuscular injected day1,

Sponsors

Department of Breast and Endocrine Surgery Graduate school of Medical Sciences, Kumamoto University
Lead Sponsor

Eligibility

Sex/Gender
Female

Inclusion criteria

Inclusion criteria: 1. The case signed informed consent of the patients for the registration 2. The case confirmed by pathological diagnosis 3. Post menopausal women with breast cancer (not less than 50 yo) 4. The case who had progressive disease during the estrogen (ethinyl-estradiol) treatment 5. The case with measurable metastatic / recurrent site or evaluable bone metastasis 6. The case that survival more than 3 months is anticipated 7. The case with PS 0,1 or 2 8. The case with a satisfactory function of a heart/liver/bone marrow and to satisfy the nest condition Hb; more than 8 g/dL, AST and ALT; Lessthan 2.5 times of the normal value limit of the institution, BUN; not more than 25mg/dL, Crea; not more than 1.5 mg/dL

Exclusion criteria

Exclusion criteria: 1. The case with active other malignancies 2. The case with HER2 positive tumor 3. The case with bilateral breast cancer 4. The case with inflammatory breast cancer 5. The case with past history of drug allergy or hypersensitivity 6. The case with severe progressive situation with non-indication ofr the hormone therapy 7. The case determined in appropriate by physicians

Design outcomes

Primary

MeasureTime frame
clinical benefit rate; CBR

Secondary

MeasureTime frame
Time to treatment failure, Response rate, Time to chemotherapy, Overall survival, Adverse events, Predictive factors

Countries

Japan

Contacts

Public ContactYutaka Yamamoto

Kumamoto University Hospital Department of Breast Cancer Molecular Targeting Therapy

ys-yama@triton.ocn.ne.jp+81-96-373-5521

Outcome results

None listed

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