A Multicenter Prospective Randomized Study of 8mm versus 10mm Fully Covered Metallic Stent in Patients with Distal Malignant biliary Obstruction

A Multicenter Prospective Randomized Study of 8mm versus 10mm Fully Covered Metallic Stent in Patients with Distal Malignant biliary Obstruction - Nagoya Biliary Stent Study (NABIS study)

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000013560

Enrollment

200

Registered

2014-05-01

Start date

2014-06-09

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

case of unresectable malignant distal biliary obstruction

Interventions

8mm Fully Covered Metalic Stent 10mm Fully Covered Metalic Stent

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Case of unresectable malignant distal biliary obstruction Patients with accurate diagnosis of malignancy

Exclusion criteria

Exclusion criteria: Performance status 4 Estimated life expectancy less than 3 months Severe neurologic impairment or mental disorder and

Design outcomes

Primary

Measure	Time frame
patency period of stent	—

Secondary

Measure	Time frame
Overall survival, frequency of adverse event, kinds of adeverse event, stent patency rate at patients' death	—

Countries

Japan

Contacts

Public ContactHiroki Kawashima

Nagoya University Graduate School of Medicine Gastroenterology and Hepatology

h-kawa@med.nagoya-u.ac.jp+81-52-744-2602

Outcome results

None listed

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