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Intersegmental plane identification by vitamin B2 injections with Blacklight exposure (B2B study)

An exploratory study of intersegmental plane identification by vitamin B2 injections with Blacklight exposure - B2B study

Status
Recruiting
Phases
Phase 2
Study type
Interventional
Source
JPRN
Registry ID
JPRN-jRCTs061240125
Enrollment
20
Registered
2025-02-18
Start date
2025-05-29
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

Lung cancer

Interventions

During a pulmonary segmentectomy, vitamin B2 is administered intravenously after the segmental branch of the pulmonary artery is dissected. During this procedure, a black light irradiator is used whil

Sponsors

Shien Kazuhiko
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Patients who have been fully informed of the contents of this study and have given written consent 2. Patients who are 18 years of age or older at the time of consent 3. Patients who are scheduled to undergo a lung resection for lung cancer or suspected lung cancer

Exclusion criteria

Exclusion criteria: 1. Patients with abnormal renal function (eGFR < 40 mL/min/1.73 m2) 2. Patients with abnormal liver function (AST [GOT] or ALT [GPT] more than twice the institutional standard) 3. Patients with a history of iodine allergy 4. Patients with severe emphysema or interstitial pneumonia on preoperative CT scan and considered difficult to identify the intersegmental plane by ICG fluorescence method 5. Patients who are taking vitamin B2-containing supplements and cannot discontinue them for 1 day before surgery 6. Pregnant women, lactating women, patients with a positive pregnancy test, or patients who do not intend to use contraception 7. Patients who are inappropriate for this study judged by the principal investigator or subinvestigator

Design outcomes

Primary

MeasureTime frame
Phase I: Incidence of dose limiting toxicity (DLT) in each dose group Phase II: Intersegment identification rate of vitamin B2 method at the recommended dose (RD)

Secondary

MeasureTime frame
1. Intersegment identicication rate to the total intersegmental plane for each case (vitamin B2 and ICG fluorescence methods) 2. Intersegmental concordance rate and percentage as determined by ICG fluorescence and vitamin B2 methods 3. Surgical outcomes (operation time, duration of postoperative thoracic drainage, postoperative complication rate, postoperative hospital stay, and complete resection rate) 4. Safety of the vitamin B2 method

Contacts

Public ContactKazuhiko Shien

Okayama University Hospital

k.shien@okayama-u.ac.jp+81-86-235-7265

Outcome results

None listed

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