Risk Reduction Surgery for Hereditary Breast and Ovarian Cancer Syndrome in Tsukuba

Risk Reduction Surgery for Hereditary Breast and Ovarian Cancer Syndrome in Tsukuba - Risk Reduction Surgery for HBOC Syndrome in Tsukuba

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000032056

Enrollment

Registered

2018-04-02

Start date

2018-04-09

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

Hereditary Breast and Ovarian Cancer Sundrome

Interventions

Surgery: Mastectomy and/or salpingo-oophorectomy

Eligibility

Sex/Gender

Female

Inclusion criteria

Inclusion criteria: Case diagnosed as Hereditary breast and ovarian cancer syndrome. Case with breast and/or ovarian cancer history must have undergone curative treatment and should be cancer free at inclusion.

Exclusion criteria

Exclusion criteria: Case who do not want to participate.

Design outcomes

Primary

Measure	Time frame
Incidence of occult breast cancer for risk reduction mastectomy. Incidence of occult cancer, STIC, and positive cancer cells by cytodiagnosis of ascites.	—

Secondary

Measure	Time frame
Safety of surgery, duration of hospital stay, incidence of breast and peritoneal cancer after risk reduction surgery	—

Countries

Japan

Contacts

Public ContactHiroko Bando

University of Tsukuba Hospital Breast and Endocrine Surgery

bando@md.tsukuba.ac.jp029-853-3341

Outcome results

None listed

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