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Topical Dermaprazole for Radiation Dermatitis in Breast Cancer Patients (TOPAZ)

A Phase I/II Study of Dermaprazole For Radiation Dermatitis in Post-Mastectomy Breast Cancer Patients.

Status
Terminated
Phases
Phase 1Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05269160
Enrollment
3
Registered
2022-03-07
Start date
2023-04-24
Completion date
2024-04-15
Last updated
2026-02-17

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

Conditions

Breast Cancer, Radiation Dermatitis

Keywords

Radiation dermatitis, post-mastectomy, radiation therapy, breast cancer

Brief summary

Radiotherapy is a mainstay of treatment in breast cancer treatment, in the adjuvant setting. Radiation dermatitis occurs in up to 65% of these patients; currently, there is no standard of care for this treatment-related toxicity. The aim of this study is to investigate the safety and tolerability (Phase I) and preliminary efficacy (Phase II) of prophylactic esomeprazole cream (termed "Dermaprazole") in patients who require radiation for breast cancer in the adjuvant setting.

Detailed description

All study participants will begin using Dermaprazole for 1-2 weeks prior to receiving radiation. During the CT Simulation, study participants will be instructed to apply Dermaprazole in a "patch test" area - an area of the chest outside of the field of radiation. This is to assess for immediate skin reactions including itching, irritation and allergy. If there are no immediate allergic reactions at the conclusion of the simulation visit, the study participant will be instructed to apply the cream in the patch test for 2-4 days to assess for contact dermatitis and if no itching or rash at that time (evaluation will be conducted via phone call). Patients will be questioned regarding any visible skin changes or irritation (itching, peeling, scaling), and patients responding in the affirmative will be asked to present for clinic visit or send photographs for visual classification according to the scale outlines in Table 1 below. Skin reactions matching a score of 3 will be evaluated with a second clinic visit between 2 to 7 days after initial application. Any skin reactions of score 4 or 5 at final assessment will be deemed to be positive for allergic contact dermatitis, and patients will be deemed positive for allergic contact dermatitis. Two dose levels of Dermaprazole (1% and 2%) will be evaluated in the combination Phase I/II dose escalation/de-escalation BOIN design study evaluating preliminary efficacy at the Maximum Feasible Dose (MFD). The Dermaprazole will be initiated at a dose of 1% and escalated to 2% as appropriate based on the number of adverse events. A Dose Limiting Toxicity (DLT) will be defined as any of the following: a) any \> Grade 2 skin toxicity outside the radiation field (Macules/ papules covering 10-30% of the area with or without symptoms of pruritus, burning, tightness), b) any \> Grade 2 radiation dermatitis (Moderate to brisk erythema; patchy moist desquamation, within the radiation field that is probably or definitely related to Dermaprazole. Dermatitis will be evaluated by a radiation oncologist on a weekly basis using the Common Terminology Criteria for Adverse Events (CTCAE) V5.0 criteria. Patient reported quality of life will be evaluated using a validated survey instrument called SkinDex16.

Interventions

DRUGDermaprazole 1%

Dermaprazole cream at a concentration of 1% will be applied to the irradiated area twice daily for up to 7 weeks

DRUGDermaprazole 2%

Dermaprazole cream at a concentration of 2% will be applied to the irradiated area twice daily for up to 7 weeks

Sponsors

Baylor College of Medicine
Lead SponsorOTHER

Study design

Allocation
NON_RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
SUPPORTIVE_CARE
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 100 Years
Healthy volunteers
No

Inclusion criteria

1. Women with breast cancer, treated with ipsilateral i) Simple (total) mastectomy, OR ii) Modified radical mastectomy, OR iii)Radical mastectomy, OR iv) Segmental mastectomy, OR v) Skin sparing/nipple sparing mastectomy 2. Histological diagnosis of invasive ductal or lobular carcinoma (diagnosed within 2 years of enrollment) 3. Planned to receive adjuvant chest wall radiation of at least 40Gy or higher biologically equivalent dose (BED) 4. Age 18 years or older 5. Women of childbearing potential (any woman with menses in the last 12 months) must agree to pregnancy testing and contraceptive use throughout the study period. Testing consists of human chorionic gonadotropin (HCG) urine testing, which if suspected to be falsely positive may be confirmed by ultrasound. If ultrasound is negative, patient is considered not pregnant and eligible for inclusion in the study. In addition to routine contraception method such as barrier devices, hormonal methods, and intrauterine devices, heterosexual celibacy, and surgical sterility (hysterectomy, bilateral oophorectomy, bilateral tubal ligation, or a partner with history of vasectomy) is considered acceptable. If a celibate patient chooses to become sexually active during the study period, she must use one of the listed methods of contraception throughout the study period. 6. Eastern Cooperative Oncology Group (ECOG) performance status 0 to 2 7. Written Informed Consent 8. History and Physical within 12 weeks of enrollment

Exclusion criteria

1. Prior chest wall radiotherapy 2. Any serious medical condition or illness that would preclude the safe administration of the study drug including, but not limited to: active infection, symptomatic heart failure, unstable angina, psychiatric illness or social situations that would limit compliance with treatment 3. Concurrent chemotherapy 4. Biopsy-proven epidermal involvement or positive margins 5. Open wound at time of consultation, or delayed surgical wound healing as defined as open wound \>8 weeks post-op 6. Known active collagen vascular disease such as systemic lupus erythematous, scleroderma or dermatomyositis. 7. Allergy or sensitivity to proton pump inhibitors 8. Pregnancy or breast feeding 9. Use of clopidrogrel, St. Johns Wort, rifampin, or methotrexate

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants With Dose-Limiting Toxicity(DLT) in Phase Ifrom the first day applying the Dermaprazole cream until 1 month after the subject has completed their last radiation treatment, up to 13 weeksA DLT is defined as any of the following:1) Any \> Grade 2 skin toxicity outside the radiation field (Macules/ papules covering 10-30% of the area with or without symptoms of pruritus, burning, tightness); 2). Any \> Grade 2 radiation dermatitis (Moderate to brisk erythema; patchy moist desquamation, mostly confined to skin folds and creases; moderate edema) within the treatment field that is probably or definitely related to Dermaprazole. Dermatitis will be evaluated by a radiation oncologist on a weekly basis using the Common Terminology Criteria for Adverse Events (CTCAE) V5.0 criteria. Patient reported quality of life will be evaluated using a validated survey instrument called SkinDex16.
Rate of Clinically Bothersome Radiation Dermatitis at Maximum Feasible Dose in Phase IIat weekly during radiation treatment, up to 7 weeksRadiation dermatitis will be determined by the radiation oncologist and defined using NCI Common Terminology Criteria for Adverse Events (CTCAE version 5) for dermatitis radiation. In particular, the individual components of radiation dermatitis will be recorded: erythema, desquamation, edema, bleeding, skin necrosis and skin ulceration.

Secondary

MeasureTime frameDescription
Number of Participants With Grade 2 or Higher Acute Radiation Dermatitisfrom the first day the subject applies the cream to the end of the 6 month follow up periodThis measure reports the number of participants who experienced Grade 2 or higher acute radiation dermatitis, as defined by the maximum observed severity during the treatment period. In particular, the individual components of radiation dermatitis will be recorded: erythema, desquamation, edema, bleeding, skin necrosis and skin ulceration.
Median- Occurrence Time of Grade 2 or Higher Acute Radiation Dermatitisfrom the first day the subject applies the cream to the end of the 6 month follow up periodMedian-occurrence of grade 2 or higher acute radiation dermatitis time on the Kaplan-Meier method is defined as the time between the first time of applying the cream and the time of occurrence of grade 2 or higher acute radiation dermatitis.
Median-healing Time of Grade 2 or Higher Acute Radiation Dermatitis Developsfrom the first day the subject applies the cream to the end of the 6 month follow up periodMedian-healing time of grade 2 or higher acute radiation dermatitis developing time on the Kaplan-Meier method is defined from time to develop the grade 2 or higher acute radiation dermatitis after applying the cream to healing the event.
Median of the Peak Score of Total QOL Scoreat before and after Dermaprazole cream application at the CT simulation visit, weekly during radiation treatment up to 7 weeks, 1 and 6 month follow-up after completion of all radiation therapyPatient reported quality of life will be evaluated using a validated survey instrument called SkinDex16 questionnaire for QOL. The Skindex-16 assessment tool is designed to capture patient-reported assessments of subjective adverse effects. It consists of a short 16-item assessment completed by the patient, with each item rated on a 7-point Likert scale (0=never bothered to 6=always bothered). The total raw scores are transformed to a 0 - 100 scale. The higher scores indicate greater impairment. For each patient, identifiy the highest total QOL score across all time points, and then calcuate the median of these individual peak scores across all patients.
Number of Missed Radiation Treatments Due to Skin Toxicityat weekly during radiation treatment, up to 7 weeksThe number of missing radiation treatments due to skin toxicity will be counted.

Countries

United States

Contacts

PRINCIPAL_INVESTIGATORDaniel A Hamstra, MD, PhD

Baylor College of Medicine

Participant flow

Recruitment details

The study started with the phase I part to define the safety and maximum feasible dose of Dermaprazole(two dose levels: 1% and 2%). Three patients applied dose level of 1% and completed treatment and follow up. No more patients were enrolled.

Baseline characteristics

Characteristic
Age, Continuous38 years
STANDARD_DEVIATION 8.83
ECOG performance score
0: Fully active, no rrestictions
1 Participants
ECOG performance score
1: Restricted in physically strenuous activity
2 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
3 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
0 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
Sex: Female, Male
Female
3 Participants
Sex: Female, Male
Male
0 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
0 / 3
other
Total, other adverse events
3 / 3
serious
Total, serious adverse events
1 / 3

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 18, 2026