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EMLA Topical Cream for Treatment of Pain in Patients Receiving Intra-Dermal Technetium 99 Injections for Lymphoscintigraphy for Skin Cancers

Investigating the Use of EMLA Topical Cream for Patients Receiving Intra-Dermal Technetium 99 Injections for Lymphoscintigraphy for Cutaneous Cancers

Status
Recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06223659
Enrollment
100
Registered
2024-01-25
Start date
2023-12-19
Completion date
2026-10-31
Last updated
2026-03-10

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Cutaneous Melanoma, Merkel Cell Carcinoma, Skin Squamous Cell Carcinoma

Brief summary

This phase II trial tests how well EMLA topical cream works in treating pain in patients with skin cancers receiving Technetium 99 injections for a lymphoscintigraphy mapping procedure. A lymphoscintigraphy mapping procedure is used to find the main or lead lymph node (tissue that fight infection) so it can be removed and checked for tumor cells. Using lymphoscintigraphy to highlight and then surgically remove lymph nodes is standard way to treat skin cancer for many patients. The Technetium 99 injections used for lymphoscintigraphy can be briefly painful due to the sensitivity of the nerve endings in the skin. The EMLA topical cream, which contains a numbing medicine to block pain from nerve endings, has been studied in breast cancer patients with a difference in pain reported, but this is the first time it has been studied in patients undergoing lymphoscintigraphy for skin cancer. This study may help researchers learn whether the use of EMLA cream may improve the associated pain at the time of the lymphoscintigraphy procedure.

Detailed description

PRIMARY OBJECTIVE: I. Evaluate if the application of eutectic mixture of local anesthetics (EMLA) topical cream (2.5% lidocaine mixed with 2.5% prilocaine) prior to intra-dermal Technetium 99 sulfur colloid (Tc99 injection) for lymphoscintigraphy can improve associated pain. OUTLINE: Patients are randomized to 1 of 2 cohorts. COHORT 1: Patients apply EMLA cream topically to skin 30 minutes prior to Tc99 lymphoscintigraphy procedure. COHORT 2: Patients apply placebo cream topically to skin 30 minutes prior to Tc99 lymphoscintigraphy procedure.

Interventions

DRUGEutectic Mixture of Local Anesthetics

Apply topically to skin

DRUGPlacebo Administration

Apply topically to skin

OTHERQuestionnaire Administration

Ancillary studies

Sponsors

Ohio State University Comprehensive Cancer Center
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Subject)

Eligibility

Sex/Gender
ALL
Age
18 Years to 99 Years
Healthy volunteers
No

Inclusion criteria

* Biologic males or females * 18 - 99 years of age * Histologically confirmed cutaneous melanoma, Merkel cell carcinoma, squamous cell carcinoma, or other cutaneous malignancy for which lymphoscintigraphy and sentinel lymph node biopsy has been recommended.

Exclusion criteria

* Known allergy or intolerance to EMLA cream, lidocaine, prilocaine, or any other local anesthetic * History of adhesive allergy * Contraindication to Tc99 injection for sentinel lymph node mapping * Incarcerated patients * Patients incapable of independently providing consent * Mucosal or genital lymphoscintigraphy site * Pregnancy * Participant self-declared or Ohio State University (OSU) medical chart listing chronic pain as a pre-existing diagnosis * Participants with chronic pain as defined by the Centers for Disease Control and Prevention (CDC):"pain lasting 3 months or more that can be caused by a disease or condition, injury, medical treatment, or unknown reason" excluding those with stable co-morbid conditions such as peripheral neuropathy, fibromyalgia, arthritis, and cancer-related pain who do not require narcotics. Patients who require narcotics at any time within the 7-day period leading up to the procedure

Design outcomes

Primary

MeasureTime frameDescription
Pain scoreUp to 1 yearPain will be measured on a Defense and Veterans Pain Rating 10-point scale where 1 is the lowest measure of pain, and 10 is the highest pain. Will be analyzed using an independent samples t-test to compare the mean pain score of the two cohorts. Descriptive statistics of patient demographics and adverse events will also be reported.

Secondary

MeasureTime frameDescription
Incidence of adverse events30 minutes after lymphoscintigraphy injectionReported side effects will be recorded and compared between the two groups using Common Terminology Criteria for Adverse Events (CTCAE) version 5.0.

Countries

United States

Contacts

CONTACTThe Ohio State University Comprehensive Cancer Center
OSUCCCClinicaltrials@osumc.edu800-293-5066
PRINCIPAL_INVESTIGATORCarlo M Contreras, MD

Ohio State University Comprehensive Cancer Center

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Mar 11, 2026