A multicenter exploratory study on the usefulness of covered metalic stent with fins(New GENOS) for biliary obstruction caused by unresectable middle-lower bile duct malignant tumors

A multicenter exploratory study on the usefulness of covered metalic stent with fins(New GENOS) for biliary obstruction caused by unresectable middle-lower bile duct malignant tumors - A multicenter exploratory study on the usefulness of New GENOS

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000017140

Enrollment

Registered

2015-04-14

Start date

2014-10-01

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

Middle-lower bile duct obstruction caused by malignant tumors such as pancreas cancer, Ampullary carcinoma, bile duct cancer, gallbladder cancer, malignant lymphoma, lymph node metastasis, etc

Interventions

placement New GENOS stent to non-resectable distal malignant biliary obstruction

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: non-resectable distal malignant biliary obstruction Written informed consent was obtained from all patients before the procedures

Exclusion criteria

Exclusion criteria: difficult to approach by endoscope Patients with ascites Patients with hilar obstruction World Health Organization performance status of 4

Design outcomes

Primary

Measure	Time frame
rate of stent migration	—

Secondary

Measure	Time frame
rate of recurrent biliary obstruction(RBO), time to recurrent biliary obstruction(TRBO)	—

Countries

Japan

Contacts

Public ContactKazunaga Ishigaki

Graduate School of Medicine, The University of Tokyo Department of Gastroenterology

ISHIGAKIKA-INT@h.u-tokyo.ac.jp81-3-3815-5411

Outcome results

None listed

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