University of Colorado Hospital
Aurora, Colorado, 80045, United States
Location contact
Gregory Ottenberg
CONTACT
Steven Thorpe, MD, FACS
PRINCIPAL_INVESTIGATOR
NCT Number: NCT07038278
The goal of this study is to learn if the intervention using a fluorescent agent 5-Aminolevulinic acid (5-ALA) to aid in the surgical approach to visualize the soft-tissue sarcoma (STS) during surgical resection. 5-ALA goes through the blood stream and into the tumor tissue allowing it to light up when the surgeon uses a special light in the operating room. The technique is called 5-ALA fluorescence-guided surgery (FGS). The main question aims to answer if 5-ALA provide intraoperative fluorescent visualization of soft-tissue sarcoma versus surrounding tissue and demonstrate the efficacy of tumor and surgical margin resections by a gross and histological analysis of fluorescing and non-fluorescing samples immediately after removal. Participants will be asked to orally administer 5-ALA three to four hours prior to surgery in preoperative area.
Trial opening soon.
Get Notified18 year and older
All sexes
Interventional
Early Phase 1
Aurora, Colorado, 80045, United States
Gregory Ottenberg
CONTACT
Steven Thorpe, MD, FACS
PRINCIPAL_INVESTIGATOR
Healthy volunteers accepted: No
Only the study team can determine whether someone qualifies for participation.
Inclusion criteria
Inclusion of Minorities and Other Underrepresented Populations Recruitment is open and encouraged to all genders, all minorities, and underrepresented populations. Although distributions may vary by disease type, our recruitment procedures have been developed to enroll participants who are representative of the respective target population.
Exclusion criteria
5-ALA), also known by its brand name Gleolan, is an intermediate in the heme synthesis pathway that has been studied in tumor resections, especially in intracranial tumor resections. One advantage of intraoperative visualization with 5-ALA is the ability to directly visualize fluorescent tumor in the surgical field using a headset-mounted devices with fluorescence in the visual wavelength in real-time.
Other names: Gleolan
Time frame: From enrollment to 2 weeks
Patients will receive 5-ALA administered in the preoperative area. Surgical resection of the soft tissue sarcoma will be done as per standard of care.
A fluorescent headset will be turned on at defined time points below and tumor fluorescence will be noted (yes or no):
Time frame: perioperative/periprocedural
Surgeons will fill out survey (yes or no) to answer following intraoperative assessment questions:
Time frame: Day of Surgery
The sarcoma tumor will then be hemisected immediately after resection in pathology lab.
The fluorescent headset will be used to identify areas of fluorescence in the tumor.
Multiple samples (3mm punch) will be taken from nonfluorescent areas and placed on slides:
Histologic analysis will evaluate for viable tumor cells (%). For this, Sensitivity will be considered as the proportion of cells who had viable tumor that fluoresced, with specificity as the proportion of cells that had non-viable tumor without fluorescence.
Time frame: Day of surgery
Description: The sarcoma tumor will then be hemisected immediately after resection in pathology lab. The fluorescent headset will be used to identify areas of fluorescence in the tumor. Multiple samples (3mm punch) will be taken from these fluorescent areas in the tumor and placed on slides: Specific to the margins and include the relevant presence of fluorescence (yes/no), cancer cells(%). For this, Sensitivity will be considered as the proportion of cancerous cells that fluoresced, with specificity as the proportion of non-cancerous cells that did not.
Time frame: Day of surgery
The sarcoma tumor will then be hemisected immediately after resection in pathology lab.
The fluorescent headset will be used to identify areas of fluorescence in the tumor.
Multiple samples (3mm punch) will be taken from these fluorescent areas in the tumor and placed on slides:
These will be specific to the tumor and include the relevant presence of fluorescence (yes/no), viable tumor cells (%). For this, Sensitivity will be considered as the proportion of cells who had viable tumor that fluoresced, with specificity as the proportion of cells that had non-viable tumor without fluorescence.
Time frame: From enrollment to 2 years
Local recurrence free survival will be determined from time of surgery and with use of MRI with contrast
Time frame: From enrollment to 2 years
Patient Reported Outcomes Measurement Information System (PROMIS) patient reported outcome measure.
Time frame: From enrollment to 2 years.
Toronto Extremity Salvage Score (TESS) patient reported outcome measure.
Time frame: From enrollment to 2 years.
Visual Analog Scales (VAS) patient reported outcome measure.
Contact information is provided by the study sponsor or research team.
University of Colorado, Denver
Other
5-AminoLevulinic Acid Aided Resection Margins in Sarcoma (5-ALARMS)
Acronym: 5-ALARMS
OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.
View the official ClinicalTrials.gov record (opens in a new tab)This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.
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