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Enrolling by invitationNCT06768268ICGMVUpdated Apr 16, 2025

A Dose-Image Optimization Trial Evaluating Mannitol and Voluven as Adjuncts for Indocyanine Green

A Phase 1/2 interventional study of Voluven-assisted Indocyanine green fluorescence guided sentinel lymph node biopsy for breast cancer and Mannitol (20%) in Breast Cancer Early Stage Breast Cancer (Stage 1-3), sponsored by National Taiwan University Hospital. Enrolling by invitation at 1 site in Taiwan. Open to female participants aged 20 Years to 70 Years. Per ClinicalTrials.gov, last updated 2025-04-16.

Sponsored by National Taiwan University Hospital · Phase 1/2, Interventional, and Other

From the registry’s dates

  • Primary completion was expected by Dec 2025, 9 months ago, but the record still lists the study as enrolling by invitation.
Phase
Phase 1/2
Study type
Interventional
Enrollment
30
Allocation
Non-randomized
Ages
20 Years to 70 Years
Sex
Female
01

Study summary

The goal of this clinical trial is to exploring the use of Mannitol 20% as a solvent to prepare ICG solution, combining with Voluven, forming a hybrid small-large molecular weight solvent for protecting ICG in monomer form and stimulating lymphatic uptake simultaneously in early breast cancer patients who is indicated to undergo sentinel lymph node biopsy. The main question it aims to answer is:

  • Will adding Mannitol with Voluven as ICG solvent improve the fluorescence signal of the lymph nodes, comparing with using pure Voluven?
  • Which proportion of Mannitol-Voluven delivers the best image quality when used as solvent of ICG?

Researchers will compare the following arms with different solvent (all arms' final ICG concentration are 0.25mg/mL):

  • Pure Voluven
  • Mannitol:Voluven = 1:10
  • Mannitol:Voluven = 1:8
  • Mannitol:Voluven = 1:6
  • Mannitol:Voluven = 1:4 to see if increased Mannitol:Voluven ratio as ICG solvent translates to better fluorescence image quality.

Participants will be invited in a group of 3, and be blindly assigned to each concentration group sequentially. Participants will undergo ICG fluorescence guided sentinel lymph node biopsy with the assigned solution formula. The endpoints included number of lymph nodes obtained, fluorescence signal-to-background ratio of the lymph nodes, lymphatic uptake rate, lymphatic drainage speed, detection method, lymph node pathology, and any intra- or post-operative complications.

02

Conditions studied

  • Breast Cancer Early Stage Breast Cancer (Stage 1-3)

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Keywords

  • indocyanine green
  • sentinel lymph node biopsy
  • near-infrared fluorescence
  • 6-hydroxyethyl starch
  • mannitol
  • breast cancer
  • fluorescence-guided surgery
03

In context

Breast Neoplasms

12,544 studies on the registry are indexed under Breast Neoplasms; 2,892 are open to participants now.

This study's planned enrollment of 30 is below the median of 72 across 9,303 interventional studies indexed under Breast Neoplasms.

Browse Breast Neoplasms studies →

Lead sponsor

National Taiwan University Hospital is the lead sponsor of 2,563 studies on the registry; 569 are open to participants now.

Of its 11 completed or terminated interventional studies of FDA-regulated products, 2 (18%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
20 Years to 70 Years
Sexes eligible
Female
Accepts healthy volunteers
No

Inclusion criteria

  • Adult females aged 20 to 70 years old.
  • Pathologically confirmed invasive breast cancer patients who are eligible for sentinel lymph node biopsy.

Exclusion criteria

Exclusion Criteria:

  • History of allergy to iodine, ICG, blue dye, Voluven, or Mannitol.
  • History of hyperthyroidism, thyroid cancer, etc.
  • Current pregnancy, lactation, or breast infection.
  • Individuals with impaired mental capacity or belonging to vulnerable populations.
  • Patients who have undergone neoadjuvant chemotherapy prior to surgery.
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Study design

Phase
Phase 1 / Phase 2
Primary purpose
Other
Allocation
Non-randomized
Intervention model
Sequential assignment
Masking
Single (Participant)
Enrollment
30 participants (estimated)

Study arms

  • Active comparator
    Pure Voluven

    The solution is prepared using Voluven as solvent, forming a 0.25 mg/mL ICG:Voluven solution.

    Procedure: Voluven-assisted Indocyanine green fluorescence guided sentinel lymph node biopsy for breast cancer

  • Active comparator
    1:10

    The solution is prepared using Mannitol(20%):Voluven=1:10 as solvent, forming a 0.25 mg/mL ICG:Solvent solution.

    Procedure: Voluven-assisted Indocyanine green fluorescence guided sentinel lymph node biopsy for breast cancer · Drug: Mannitol (20%)

  • Active comparator
    1:8

    The solution is prepared using Mannitol(20%):Voluven=1:8 as solvent, forming a 0.25 mg/mL ICG:Solvent solution.

    Procedure: Voluven-assisted Indocyanine green fluorescence guided sentinel lymph node biopsy for breast cancer · Drug: Mannitol (20%)

  • Active comparator
    1:6

    The solution is prepared using Mannitol(20%):Voluven=1:6 as solvent, forming a 0.25 mg/mL ICG:Solvent solution.

    Procedure: Voluven-assisted Indocyanine green fluorescence guided sentinel lymph node biopsy for breast cancer · Drug: Mannitol (20%)

  • Active comparator
    1:4

    The solution is prepared using Mannitol(20%):Voluven=1:4 as solvent, forming a 0.25 mg/mL ICG:Solvent solution.

    Procedure: Voluven-assisted Indocyanine green fluorescence guided sentinel lymph node biopsy for breast cancer · Drug: Mannitol (20%)

Interventions

  • ProcedureVoluven-assisted Indocyanine green fluorescence guided sentinel lymph node biopsy for breast cancer

    The procedure includes: (1) preparation of specific formula of ICG:Voluven solution (2) injection of ICG solution at subarelar area or peri-tumoral area (3) observation of fluorescent lymphatic drainage and retrieval of sentinel lymph nodes

  • DrugMannitol (20%)

    Adding Mannitol into Voluven and used as solvent of ICG

06

What researchers measure

Primary outcomes

  1. Number of sentinel lymph nodes

    The number of the retrieved sentinel lymph nodes

    Time frame: From the procedure day to the follow-up clinic visit day (average 10 days)

  2. Fluorescence signal-to-background ratio of the lymph nodes

    Time frame: From the procedure day to the follow-up clinic visit day (average 10 days)

Secondary outcomes

  1. Lymphatic uptake rate

    The time from injection to the development of fluorescent subcutaneous lymphatics

    Time frame: From the procedure day to the follow-up clinic visit day (average 10 days)

  2. Lymphatic drainage speed

    The time from the initiation of visible fluorescent subcutaneous lymphatics to that reaches the axilla

    Time frame: From the procedure day to the follow-up clinic visit day (average 10 days)

  3. Detection method

    The method of the sentinel lymph node being detected. (Could be radioisotope, blye dye, ICG fluorescence, or combination of multiple methods)

    Time frame: From the procedure day to the follow-up clinic visit day (average 10 days)

  4. Lymph node pathology

    The positivity of sentinel lymph node metastasis in the pathology report.

    Time frame: From the procedure day to the follow-up clinic visit day (average 10 days)

07

Study locations

1 site
  • National Taiwan University Hospital Hsinchu Branch
    Hsinchu County, 302, Taiwan
08

References and documents

Publications

  • Hsieh YC, Guo KW, Wang MW, Su SP, Syu YH, Huang CS, Chan YH. A Novel Injection Protocol Using Voluven(R)-Assisted Indocyanine Green with Improved Near-Infrared Fluorescence Guidance in Breast Cancer Sentinel Lymph Node Mapping-A Translational Study. Ann Surg Oncol. 2023 Dec;30(13):8419-8427. doi: 10.1245/s10434-023-14129-4. Epub 2023 Aug 21. PubMed 37605084 ↗

Individual participant data

Plan to share: Undecided

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 16, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06768268
Lead sponsor
National Taiwan University Hospital
Collaborators
National Yang Ming Chiao Tung University, National Taiwan University Hospital Hsin-Chu Branch
Responsible party
Sponsor
First posted
Jan 10, 2025
Start date
Jan 1, 2025
Primary completion
Dec 31, 2025 (estimated)
Completion
Dec 31, 2025 (estimated)
Last update
Apr 16, 2025

Study contacts

Yung Chun Hsieh, M.D., MMSC
study chair · National Taiwan University Hospital Hsinchu Branch

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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