ClinicalTrials.gg
Enrolling by invitationNCT07380867TattooingUpdated Feb 2, 2026

Confirming the Accuracy of Endoscopic Marking Using a New Marker, a Novel Luminomarker, in Lesion Marking Before Colorectal Cancer Surgery.

An interventional study of LuminoMark inj. 0.2mL in Colorectal Cancer, Endoscopic Tattoo of Suspected Colon Cancer and Indocyanine Green (ICG), sponsored by Seoul St. Mary's Hospital. Enrolling by invitation at 1 site in South Korea. Open to participants aged 19 Years to 80 Years. Per ClinicalTrials.gov, last updated 2026-02-02.

Sponsored by Seoul St. Mary's Hospital · Not applicable, Interventional, and Diagnostic

Phase
Not applicable
Study type
Interventional
Enrollment
30
Allocation
Not applicable
Ages
19 Years to 80 Years
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 282 studies in Colorectal Neoplasms with a site in Korea, Republic of — 60 open to participants now, 96 under way, 12 of them phase 3. Colorectal Neoplasms · Korea, Republic of.

Planned enrollment
217th of 250
30 · median 145
Started
2025
with 20 others
No phase
44 of 282
10 open now
Primary completion
2026-12
later than 34 of 95 live
Registered
273rd of 282
by date

Among the 282 studies in Colorectal Neoplasms with a site in Korea, Republic of, this one is the 217th largest by planned enrollment of the 250 interventional ones that give a count, is one of 21 that started in 2025, is one of 44 with no phase, reaches primary completion later than 34 of the 95 other live ones, and was the 273rd registered.

Colorectal Neoplasms

6,541 studies on the registry are indexed under Colorectal Neoplasms; 1,667 are open to participants now.

This study's planned enrollment of 30 is below the median of 76 across 4,800 interventional studies indexed under Colorectal Neoplasms.

Browse Colorectal Neoplasms studies →

Open to participants now

60 of the 282 studies in Colorectal Neoplasms with a site in Korea, Republic of are open now.

All 60 open studies →

A study can be open while its sites in Korea, Republic of have not opened yet or have stopped. Only those recruiting at a site in Korea, Republic of →

Who these studies take

Of the 1,185 Colorectal Neoplasms studies recruiting now, 769 (65%) set no upper age limit and 265 (22%) stop at 75 or younger; 48 take children under 18; 123 take healthy volunteers.

This study: 19 Years to 80 Years · all sexes · no healthy volunteers.

The full table on the hub →
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Watch this landscapeDownload CSVNarrow it in search →With an account: a weekly mail of what changed among 282 studies in Colorectal Neoplasms with a site in Korea, Republic of, or all of them as a file.
02

Study summary

Early-stage lesions are difficult to identify intraoperatively during colorectal cancer surgery. Therefore, preoperative lesion marking using a colonoscopic approach is crucial to confirm the location and extent of resection during surgery. Preoperative lesion location can help determine the optimal extent of resection, thereby increasing the accuracy of colorectal surgery. This is particularly true for cases requiring surgery after early-stage colorectal cancer or endoscopic tumor resection. Therefore, preoperative marking with indocyanine green (IDG) allows for laparoscopic identification of the lesion. This is crucial because it allows for precise lesion location, thereby enhancing surgical accuracy and preventing the need for unnecessary additional resections.

Read the detailed description

The recently developed indocyanine green (ICG)-hyaluronic acid mixture (LuminoMark™, Hanlim Pharm Co., Seoul, Republic of Korea) is a surgical marker combining indocyanine green with macroaggregated albumin (MAA). Its non-diffusing properties allow for precise lesion targeting. It addresses unmet needs of existing surgical markers, such as skin pigmentation and surgical site contamination. It effectively adsorbs onto cancerous lesions, enabling precise lesion location. Real-time tracking of the pigment allows for clear identification of the lesion's extent of removal, enhancing convenience and usability during surgery. It has already demonstrated superiority over existing labeling methods in a phase 3 clinical trial for breast lesions, receiving approval from the Ministry of Food and Drug Safety. Clinical trials are underway for various cancer types, including gastric and colon cancer, but it remains an over-approved drug.

Therefore, this study aimed to determine the accuracy of endoscopic labeling using a novel luminomarker for preoperative colon cancer lesion marking.

03

Conditions studied

  • Colorectal Cancer
  • Endoscopic Tattoo of Suspected Colon Cancer
  • Indocyanine Green (ICG)

Keywords

  • endoscopic tattooing
  • colorectal cancer
  • indocyanine green
  • LuminoMark
04

Who can participate

Ages eligible
19 Years to 80 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Adult patients aged 19-80 years
  • Clinical T1-2, N0, without distant on imaging
  • If surgical treatment is required after ESD (endoscopic mucosal resection)*
  • If endoscopic lesion marking is required as determined by the attending physician

Exclusion criteria

Exclusion Criteria:

  • Patients diagnosed with distant (M1)
  • Severe hepatic or renal dysfunction ( Class C, \<39 mL/min/1.73 m2)
  • Pregnant or lactating women
  • High risk of intestinal obstruction or perforation
  • Patients deemed inappropriate by the investigator (high-risk patients, such as patients with lung or heart disease, risk factors for bleeding, hepatitis virus infection, or other cancers)
  • Patients with a history of to the luminomarker drug or its components
  • Patients who have experienced skin hypersensitivity to the dye
  • Patients who do not wish to participate in the study
Terms in these criteria, in plain language(4)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Metastases

Cancer that has spread from where it began to other parts of the body. “Metastatic” cancer is cancer that has spread this way.

Child-Pugh class

A score of how well the liver works in people with liver disease such as cirrhosis: class A is mild, B moderate and C severe.

GFR and eGFR (kidney filtering)

GFR (glomerular filtration rate) is how much blood the kidneys filter each minute. It is usually estimated from a blood test — eGFR, by formulas such as CKD-EPI or MDRD — and some studies ask for it to be measured directly instead. Usually given in mL/min/1.73 m².

Check the method, the units and the minimum the study states. A value of 90 or above is in the normal-or-high range, but kidney damage can show in other tests too.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

05

Study design

Phase
Not applicable
Primary purpose
Diagnostic
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
30 participants (estimated)

Study arms

  • Experimental
    Luminomarker injection

    Through endoscopy, Luminomarker injection on submucosal layer. Location of injection : total 4 sites around tumor 1. Left lateral side of tumor 2. Right lateral side of tumor 3. opposite of tumor (180 degree) 4. distal part of 2cm from the tumor dosage of injection : at least 0.5cc per a site , total 2cc

    Drug: LuminoMark inj. 0.2mL

Interventions

  • DrugLuminoMark inj. 0.2mL

    * Endoscopic tattooing with Luminomark on submucosal layer of bowel * Location of injection : total 4 sites 1. Left lateral side of the tumor 2. Right lateral side of the tumor 3. opposite side of the tumor 4. distal side of the tumor * Dosage of injection: -at least 0.5cc per a site, total 2ml

06

What researchers measure

Primary outcomes

  1. Distance between endoscopic lesion markings and lesion location markings using luminomarkers for accuracy of tattooing

    * Mix 1 vial (2 ml) of Indocyanine Green (ICG) + Hyaluronic Acid Mixture (Luminomarker™) with 1 vial (2 ml) of the attached solvent. Shake gently to dissolve thoroughly. * After performing an endoscopy to identify the lesion, attach the syringe to the endoscopic injector and mark at least three locations with at least 0.2 cc each. * After general anesthesia, insert a trocar for laparoscopic or robotic surgery and insert the laparoscopic equipment. Use a Laparoscopic near-intrared (NIR) camera to confirm the lesion marking. After marking with a surgical hemoclip, take a photograph and mark with a hemoclipping. A tumor is confirmed at the ICG-marked location in the obtained specimen.

    Time frame: Perioperative/Periprocedural

Secondary outcomes

  1. post-procedure related complication

    * Check for fever above 38°C (100°F) and abdominal pain before and after the procedure, and any abnormal findings such as free air on a simple X-ray. * Check for allergic reactions to medications. * Check for any postoperative complications and postoperative pathology results.

    Time frame: through postoperative 4 days

07

Study locations

1 site
08

References and documents

Individual participant data

Plan to share: Undecided

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Started Dec 2025 (actual). Primary completion is estimated for Dec 2026, 12 months after the start.

Of 898 non-industry interventional studies with no phase under Colorectal Neoplasms, half reached primary completion within 32 months of starting (the median), counting those still running; a quarter within 15 and three quarters within 62. This study's planned 12 months is below that.

Counting every sponsor, half of 955 studies reached it within 32 months; a quarter within 14 and three quarters within 60.

How these figures are worked out, and which studies are left out of them.

Registered
Dec 21, 2025
First posted
Feb 2, 2026
StartActual
Dec 22, 2025
Primary completionEst.
Dec 31, 2026
CompletionEst.
Dec 31, 2026
Last update
Feb 2, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Feb 2, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07380867
Lead sponsor
Seoul St. Mary's Hospital
Responsible party
In Kyeong Kim (Clinical Assistant Professor, Seoul St. Mary's Hospital) — Principal investigator
First posted
Feb 2, 2026
Start date
Dec 22, 2025
Primary completion
Dec 31, 2026 (estimated)
Completion
Dec 31, 2026 (estimated)
Last update
Feb 2, 2026

Oversight

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

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