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IS-001

Phase 3

Ureter Injury | Small molecule | Other |Intuitive Surgical, Inc.|Trials Updated: Jan 15, 2026

IS-001 development status

Highest phase Phase 3
Registered trials 4 across 1 sponsor since Dec 2016

Success Probability

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Market & Valuation

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Trial Design

CONTROLLED
Total Trials4
Total Enrollment319

FDA Designations

No designations recorded

IS-001 clinical trials

IS-001 · 4 trials · 3 indications

Phase 3 1Phase 2 2Phase 1 1
NCT05954767IS-001 Injection in Patients Undergoing Robotic-Assisted Gynecological SurgeryUreter Injury
COMPLETED189 Analytics
PHASE3COMPLETED
IS-001 Injection in Patients Undergoing Robotic-Assisted Gynecological Surgery
Ureter InjuryUnlock trial analytics

Study Endpoints

Primary Endpoints

Independent reader assessment of ureter visualization by 1-5 Likert visualization rating scale from 1 not visible, 2 questionably visible, 3 low visibility, 4 visible, 5 clearly visible.
10 minutes

Evaluate ureter visualization by independent reader at (a) the pelvic brim and (b) uterine arteries location in Firefly® mode compared to white light mode at 10 minutes after IS-001 injection

Independent reader assessment of ureter visualization by 1-5 Likert visualization rating scale from 1 not visible, 2 questionably visible, 3 low visibility, 4 visible, 5 clearly visible
30 minutes

Evaluate ureter visualization by independent reader at (a) the pelvic brim and (b) uterine arteries location in Firefly® mode compared to white light mode at 30 minutes after IS-001 injection

Evaluate ureter visualization by Independent Reader
10 minutes after first IS-001 injection during surgery

Independent reader assessment of ureter visibility of a 5 second video segment of the surgical field in both Firefly® and standard white light comparator mode on a Five-point rating scale where 1 = Not Visible, 1 = Questionably Visible, 3 = Low Visibility, 4 = Visible, 5 = Clearly Visible

Evaluate fluorescent intensity of ureter by signal to background analysis
10 minutes

Fluorescent intensity of ureter evaluated as signal to background

Monitor Safety Parameters (vital signs, ECG, serum chemistry and hematology, urinalysis and adverse events)
14 days

Vital signs, 12-lead ECG, serum chemistry (CMP) and hematology (CBC), urinalysis and incidence of treatment-emergent adverse events

Secondary Endpoints

Independent reader assessment of ureter length delineation by line drawing on recorded frame measured in arbitrary unit length
10
Ureter visualization based on intraoperative surgeon's rating by 1-5 Likert visualization rating scale from 1 not visible, 2 questionably visible, 3 low visibility, 4 visible, 5 clearly visible
10 minutes
Independent reader assessment of ureter visualization by 1-5 Likert visualization rating scale from 1 not visible, 2 questionably visible, 3 low visibility, 4 visible, 5 clearly visible
45 minutes
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Study Design & Arms

AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposePREVENTION

Treatment Arms

ArmTypeDescription
EfficacyOTHERSingle intravenous injection of IS-001 and ureter visualization and delineation will be compared in white light standard of care and near-infrared (NIR) imaging mode.
Single ArmEXPERIMENTALSingle Arm Safety and Feasibility Study of IS-001 with 20 mg in Multiple Injections
Dose-escalationEXPERIMENTALDose-cohort escalation of single intravenous injection of IS-001 starting with 20 mg (n=8), escalating in 20 mg increments until optimal dose is determined.
Optimal dose-characterizationEXPERIMENTALSingle intravenous injection of IS-001 at the optimal dose will be administered to subjects assigned to the treatment group. Safety control subjects will not receive any study drug but will undergo robotic surgery and all associated safety assessment clinical trial procedures.
IV IS-001 drugEXPERIMENTALIV IS-001 given during hysterectomy performed with da Vinci® Si/Xi Surgical System

Interventions

NameTypeDescription
IS-001DRUGIV injection of IS-001 drug substance with near infrared (NIR) imaging
No treatmentDRUGno drug injection
da Vinci® Si/Xi Surgical SystemDEVICErobot-assisted minimally invasive hysterectomy surgery performed with da Vinci® Si/Xi Surgical System with Firefly® Fluorescent Imaging
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Eligibility Criteria

Age Range16 Years to 75 Years
SexFEMALE
Healthy VolunteersNo
Study Sites8

Inclusion Criteria: 1. Female subject is between the ages of 16 and 75, inclusive at time of consent. 2. Subject is scheduled to undergo robotic-assisted gynecological procedure using a da Vinci® Surgical System with Firefly® Fluorescence Imaging. 3. Subject and/or subject's parent/guardian is will...

Countries:United States
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Frequently asked questions about IS-001

What is IS-001 used for?

IS-001 is an investigational small molecule being studied for use in ureter injury and hysterectomy. It is also being evaluated in patients undergoing robotic colorectal surgery and robotic-assisted gynecological surgery. The drug is administered by injection and is intended to address surgical complications.

Who makes IS-001?

IS-001 is being developed by Intuitive Surgical, Inc., a company traded on NASDAQ under the ticker ISRG. Intuitive Surgical is known for its robotic-assisted surgical systems, and IS-001 is part of its pipeline of investigational therapies.

What phase is IS-001 in?

IS-001 has completed clinical trials in Phase 1, Phase 2, and Phase 3. The Phase 1 trial assessed safety, tolerance, and pharmacokinetics. Phase 2 trials evaluated safety and efficacy in robotic hysterectomy and feasibility in robotic colorectal surgery. A Phase 3 trial studied the drug in robotic-assisted gynecological surgery.

What clinical trials has IS-001 been in?

IS-001 has been studied in four completed clinical trials. NCT03006237 was a Phase 1 safety and pharmacokinetics study. NCT03937505 was a Phase 2 safety and efficacy study in robotic hysterectomy. NCT05769257 was a Phase 2 safety and feasibility study in robotic colorectal surgery. NCT05954767 was a Phase 3 study in robotic-assisted gynecological surgery.

Is IS-001 FDA approved?

IS-001 is an investigational drug and is not FDA approved. It has completed clinical trials, including a Phase 3 study, but approval status has not been established. The drug remains in clinical development and is not yet available for commercial use.

What is IS-001?

IS-001 is an investigational small molecule developed by Intuitive Surgical, Inc. It is administered by injection and is being studied for conditions related to ureter injury and hysterectomy. Clinical trials have evaluated its safety, efficacy, and feasibility in patients undergoing robotic-assisted surgical procedures.