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Clinical Evaluation of Metal Panel Allergens: Dose Response Study

Clinical Evaluation of Metal Panel Allergens: Aluminum, Copper, Manganese, Molybdenum, Tin, Titanium, Vanadium and Zinc Dose Response Study

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02615249
Enrollment
122
Registered
2015-11-26
Start date
2016-12-05
Completion date
2019-07-15
Last updated
2020-08-25

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

Conditions

Dermatitis, Eczematous

Brief summary

48-hour application of metal allergen patches to test for potential allergic responses.

Detailed description

A 48-hour application (approximate) of investigational allergen panels, excipient controls and corresponding reference allergens will be applied to the skin of human subjects to test for potential positive allergic responses. Test sites will be evaluated at 3-4, 7-8, 10-14 and 19-23 days after application. Ascending allergen dosages will be randomized within each panel into three different configurations which will be randomly assigned to subjects as they enter the study. The investigators and subjects will be aware of the allergens and the patch test doses but will not be aware of the location of individual allergens within each panel.

Interventions

BIOLOGICALMetal Allergen Epicutaneous Patch

48 hour application of metal allergen patch to diagnose contact dermatitis

Sponsors

Allerderm
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
DIAGNOSTIC
Masking
NONE

Eligibility

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

Inclusion criteria

1. 18 years of age or older. 2. Past positive patch test result within the past 10 years (to one of the dilution series metals being tested on this study) or strong suspicion of metal contact allergy based on results of the Qualification Questionnaire. 3. Unable to become pregnant or willing to use an acceptable method of contraception to prevent pregnancy if female of childbearing potential; (Inability to become pregnant includes all male subjects and female subjects who are postmenopausal for at least 1 year, or surgically sterile- have had a hysterectomy, bilateral ovariectomy, uterine ablation or bilateral tubal ligation. Acceptable methods of contraception include: 1) systemic birth control; 2) double barrier method; 3) intrauterine device; 4) vasectomized partner; or 5) abstinence from sexual intercourse. Subject must agree to use acceptable contraception for the duration of the entire study.) 4. Understands and signs the approved Informed Consent form which is consistent with all institutional, local and national regulations.

Exclusion criteria

1. Breastfeeding or pregnant (as determined by urine pregnancy test) or intending to become pregnant during the course of the study. 2. Topical treatment with corticosteroids or other immunosuppressive agents on or near the test area during the 14 days prior to inclusion in this study. 3. Systemic treatment with corticosteroids (equivalent to \> 10 mg prednisone) or other immunosuppressive agents during the 14 days prior to inclusion in this study. Inhaled treatments are permitted. NOTE: Steroidal nose or eye drops are permitted. 4. Treatment with ultraviolet (UV) light (including tanning) during the 3 weeks prior to inclusion in this study. 5. Acute dermatitis outbreak or dermatitis on or near the test area on the back. 6. Conditions such as; fibromyalgia, chronic fatigue, depression, cognitive impairment, flu-like symptoms, diarrhea and/or headache without at least one of the symptoms related to metal exposure listed in Section 10.1 under physical examination 7. Inability to comply with patch test study requirements including multiple return visits and activity restrictions (e.g., protecting test panels from excess moisture due to showering or vigorous activity). 8. Participation in a clinical trial of an investigational drug, treatment or device during this study or 3 weeks prior to inclusion in this study. 9. An opinion of the Investigator that deems the potential subject to be non-compliant, unable to return for study visits or complete the study as detailed in the protocol.

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants With Patch Test Responses21 days post patch applicationAllergen patch test sites were scored at Visit 3 (day 3-4) Visit 4 (day 7-8) Visit 5 (day 10-14) and Visit 6 Day 19-23). Determination of positive or negative test response for each allergen dose was assessed by the investigator following the final visit.

Secondary

MeasureTime frameDescription
Number of Subjects With Panel AdhesionDay 2, visit 2 prior to panel removalPanel Adhesion was measured at Visit 2 (day 2) prior to panel removal according to the following scale: Excellent- Skin contact good; all tape edges adherent; all allergens in contact with the skin, Good- Skin contact acceptable; some tape edges lifting; all allergens in contact with the skin, Poor- Little to no skin contact with panel; one or more allergens not in contact with the skin, Detached- Panel completely off the skin; none of the allergens in contact with the skin
Tape IrritationVisit 2 (day 2), visit 3 (day 3-4), visit 4 (day 7-8) visit 5 (day 10-14), visit 6 (day 19-23) with overall assessment by the Investigator following visit 6Tape irritation was measured according to the following scale: None- No irritation, Weak- Faint to definite pink erythema, Moderate- Moderate erythema, definite redness, Strong- Severe erythema, very intense redness. Following visit 6, the Investigators rated tape irritation based on the overall trend observed at visits 2-6. Irritation at visit 2 that resolved by visit 3 was considered none. Skin under occlusion from an adhesive material would be expected to have minimal irritation shortly after the panel is removed. Irritation that persisted or increased in severity beyond visit 3 but resolved by the following visit would have been rated as irritant. An allergic response was considered if irritation persisted beyond visit 3, increased in severity and had symptoms consistent with criteria used to score positive skin reactions according to standard patch testing guidelines established by the International Contact Dermatitis Research Group.
Chip IrritationVisit 2 (day 2), visit 3 (day 3-4), visit 4 (day 7-8) visit 5 (day 10-14), visit 6 (day 19-23) with overall assessment by the Investigator following visit 6Chip irritation was measured according to the following scale: None- No irritation, Weak- Faint to definite pink erythema, Moderate- Moderate erythema, definite redness, Strong- Severe erythema, very intense redness. Following visit 6, the Investigators rated Chip irritation based on the overall trend observed at visits 2-6. Irritation at visit 2 that resolved by visit 3 was considered none. Skin under occlusion from an adhesive material would be expected to have minimal irritation shortly after the panel is removed. Irritation that persisted or increased in severity beyond visit 3 but resolved by the following visit would have been rated as irritant. An allergic response was considered if irritation persisted beyond visit 3, increased in severity and had symptoms consistent with criteria used to score positive skin reactions according to standard patch testing guidelines established by the International Contact Dermatitis Research Group.

Countries

Germany, Italy, Japan, Netherlands, Switzerland, United States

Participant flow

Recruitment details

The study population will consist of subjects with past positive patch test result to at least one of the dilution series metals being tested on this study or strong suspicion of metal contact allergy.

Pre-assignment details

Subjects with a past positive patch test will be tested with the allergen panel and corresponding reference allergen(s) to which they had the previous response. Subjects with suspicion of metal contact allergy will be tested with all dilution series and reference allergens. Not all subjects tested all allergens

Participants by arm

ArmCount
All Subjects
All enrolled subjects were patch tested with ascending doses of investigational allergens on panes 1-5. At least 15 subjects with positive patch test responses (score of 1+, 2+ or 3+) were needed to determine optimal dose.
122
Total122

Withdrawals & dropouts

PeriodReasonFG000
Overall StudyWithdrawal by Subject1

Baseline characteristics

CharacteristicAll Subjects
Age, Continuous60.0 years
Race/Ethnicity, Customized
Asian
44 Participants
Race/Ethnicity, Customized
European
64 Participants
Race/Ethnicity, Customized
Latin/South American/Caribbean
1 Participants
Race/Ethnicity, Customized
North American
13 Participants
Region of Enrollment
Germany
30 participants
Region of Enrollment
Italy
9 participants
Region of Enrollment
Japan
44 participants
Region of Enrollment
Netherlands
20 participants
Region of Enrollment
Switzerland
6 participants
Region of Enrollment
United States
13 participants
Sex: Female, Male
Female
93 Participants
Sex: Female, Male
Male
29 Participants
Subjects with past allergic response or suspicion of allergy122 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
0 / 122
other
Total, other adverse events
30 / 122
serious
Total, serious adverse events
1 / 122

Outcome results

Primary

Number of Participants With Patch Test Responses

Allergen patch test sites were scored at Visit 3 (day 3-4) Visit 4 (day 7-8) Visit 5 (day 10-14) and Visit 6 Day 19-23). Determination of positive or negative test response for each allergen dose was assessed by the investigator following the final visit.

Time frame: 21 days post patch application

Population: Not all subjects tested all panels. No of subjects testing each panel; Panel 1- 105, Panel 2-111, Panel 3- 104, Panel 4- 109, Panel 5- 106

ArmMeasureGroupCategoryValue (COUNT_OF_PARTICIPANTS)
All SubjectsNumber of Participants With Patch Test Responses0.40 mg/cm2 aluminum chlorideNumber Positive0 Participants
All SubjectsNumber of Participants With Patch Test Responses0.40 mg/cm2 aluminum chlorideNumber Negative105 Participants
All SubjectsNumber of Participants With Patch Test Responses0.40 mg/cm2 aluminum chlorideNumber not tested16 Participants
All SubjectsNumber of Participants With Patch Test Responses0.12 mg/cm2 alumunum chlorideNumber Positive0 Participants
All SubjectsNumber of Participants With Patch Test Responses0.12 mg/cm2 alumunum chlorideNumber Negative105 Participants
All SubjectsNumber of Participants With Patch Test Responses0.12 mg/cm2 alumunum chlorideNumber not tested16 Participants
All SubjectsNumber of Participants With Patch Test Responses0.36 mg/cm2 aluminum chlorideNumber Positive1 Participants
All SubjectsNumber of Participants With Patch Test Responses0.36 mg/cm2 aluminum chlorideNumber Negative104 Participants
All SubjectsNumber of Participants With Patch Test Responses0.36 mg/cm2 aluminum chlorideNumber not tested16 Participants
All SubjectsNumber of Participants With Patch Test Responses0.72 mg/cm2 aluminum chlorideNumber Positive4 Participants
All SubjectsNumber of Participants With Patch Test Responses0.72 mg/cm2 aluminum chlorideNumber Negative101 Participants
All SubjectsNumber of Participants With Patch Test Responses0.72 mg/cm2 aluminum chlorideNumber not tested16 Participants
All SubjectsNumber of Participants With Patch Test Responses0.047 mg/cm2 aluminum lactateNumber Positive0 Participants
All SubjectsNumber of Participants With Patch Test Responses0.047 mg/cm2 aluminum lactateNumber Negative105 Participants
All SubjectsNumber of Participants With Patch Test Responses0.047 mg/cm2 aluminum lactateNumber not tested16 Participants
All SubjectsNumber of Participants With Patch Test Responses0.14 mg/cm2 aluminum lactateNumber Positive0 Participants
All SubjectsNumber of Participants With Patch Test Responses0.14 mg/cm2 aluminum lactateNumber Negative105 Participants
All SubjectsNumber of Participants With Patch Test Responses0.14 mg/cm2 aluminum lactateNumber not tested16 Participants
All SubjectsNumber of Participants With Patch Test Responses0.42 mg/cm2 aluminum lactateNumber Positive0 Participants
All SubjectsNumber of Participants With Patch Test Responses0.42 mg/cm2 aluminum lactateNumber Negative105 Participants
All SubjectsNumber of Participants With Patch Test Responses0.42 mg/cm2 aluminum lactateNumber not tested16 Participants
All SubjectsNumber of Participants With Patch Test Responses0.84 mg/cm2 aluminum lactateNumber Positive0 Participants
All SubjectsNumber of Participants With Patch Test Responses0.84 mg/cm2 aluminum lactateNumber Negative105 Participants
All SubjectsNumber of Participants With Patch Test Responses0.84 mg/cm2 aluminum lactateNumber not tested16 Participants
All SubjectsNumber of Participants With Patch Test Responses0.013 mg/cm2 copper sulfateNumber Positive2 Participants
All SubjectsNumber of Participants With Patch Test Responses0.013 mg/cm2 copper sulfateNumber Negative109 Participants
All SubjectsNumber of Participants With Patch Test Responses0.013 mg/cm2 copper sulfateNumber not tested10 Participants
All SubjectsNumber of Participants With Patch Test Responses0.040 mg/cm2 copper sulfateNumber Positive9 Participants
All SubjectsNumber of Participants With Patch Test Responses0.040 mg/cm2 copper sulfateNumber Negative102 Participants
All SubjectsNumber of Participants With Patch Test Responses0.040 mg/cm2 copper sulfateNumber not tested10 Participants
All SubjectsNumber of Participants With Patch Test Responses0.80 mg/cm2 copper sulfateNumber Positive10 Participants
All SubjectsNumber of Participants With Patch Test Responses0.80 mg/cm2 copper sulfateNumber Negative101 Participants
All SubjectsNumber of Participants With Patch Test Responses0.80 mg/cm2 copper sulfateNumber not tested10 Participants
All SubjectsNumber of Participants With Patch Test Responses0.12 mg/cm2 copper sulfateNumber Positive16 Participants
All SubjectsNumber of Participants With Patch Test Responses0.12 mg/cm2 copper sulfateNumber Negative95 Participants
All SubjectsNumber of Participants With Patch Test Responses0.12 mg/cm2 copper sulfateNumber not tested10 Participants
All SubjectsNumber of Participants With Patch Test Responses0.013 mg/cm2 manganese chlorideNumber Positive1 Participants
All SubjectsNumber of Participants With Patch Test Responses0.013 mg/cm2 manganese chlorideNumber Negative103 Participants
All SubjectsNumber of Participants With Patch Test Responses0.013 mg/cm2 manganese chlorideNumber not tested17 Participants
All SubjectsNumber of Participants With Patch Test Responses0.013 mg/cm2 zinc chlorideNumber not tested10 Participants
All SubjectsNumber of Participants With Patch Test Responses0.040 mg/cm2 manganese chlorideNumber Positive0 Participants
All SubjectsNumber of Participants With Patch Test Responses0.040 mg/cm2 manganese chlorideNumber Negative103 Participants
All SubjectsNumber of Participants With Patch Test Responses0.040 mg/cm2 manganese chlorideNumber not tested18 Participants
All SubjectsNumber of Participants With Patch Test Responses0.080 mg/cm2 manganese chlorideNumber Positive4 Participants
All SubjectsNumber of Participants With Patch Test Responses0.080 mg/cm2 manganese chlorideNumber Negative99 Participants
All SubjectsNumber of Participants With Patch Test Responses0.080 mg/cm2 manganese chlorideNumber not tested18 Participants
All SubjectsNumber of Participants With Patch Test Responses0.24 mg/cm2 manganese chlorideNumber Positive29 Participants
All SubjectsNumber of Participants With Patch Test Responses0.24 mg/cm2 manganese chlorideNumber Negative74 Participants
All SubjectsNumber of Participants With Patch Test Responses0.24 mg/cm2 manganese chlorideNumber not tested18 Participants
All SubjectsNumber of Participants With Patch Test Responses0.0067 mg/cm2 ammonium molybdateNumber Positive1 Participants
All SubjectsNumber of Participants With Patch Test Responses0.0067 mg/cm2 ammonium molybdateNumber Negative103 Participants
All SubjectsNumber of Participants With Patch Test Responses0.0067 mg/cm2 ammonium molybdateNumber not tested17 Participants
All SubjectsNumber of Participants With Patch Test Responses0.02 mg/cm2 ammonium molybdateNumber Positive0 Participants
All SubjectsNumber of Participants With Patch Test Responses0.02 mg/cm2 ammonium molybdateNumber Negative104 Participants
All SubjectsNumber of Participants With Patch Test Responses0.02 mg/cm2 ammonium molybdateNumber not tested17 Participants
All SubjectsNumber of Participants With Patch Test Responses0.040 mg/cm2 ammonium molybdateNumber Positive0 Participants
All SubjectsNumber of Participants With Patch Test Responses0.040 mg/cm2 ammonium molybdateNumber Negative103 Participants
All SubjectsNumber of Participants With Patch Test Responses0.040 mg/cm2 ammonium molybdateNumber not tested18 Participants
All SubjectsNumber of Participants With Patch Test Responses0.12 mg/cm2 ammonium molybdateNumber Positive0 Participants
All SubjectsNumber of Participants With Patch Test Responses0.12 mg/cm2 ammonium molybdateNumber Negative103 Participants
All SubjectsNumber of Participants With Patch Test Responses0.12 mg/cm2 ammonium molybdateNumber not tested18 Participants
All SubjectsNumber of Participants With Patch Test Responses0.0018 mg.cm2 tin chlorideNumber Positive1 Participants
All SubjectsNumber of Participants With Patch Test Responses0.0018 mg.cm2 tin chlorideNumber Negative110 Participants
All SubjectsNumber of Participants With Patch Test Responses0.0018 mg.cm2 tin chlorideNumber not tested10 Participants
All SubjectsNumber of Participants With Patch Test Responses0.037 mg/cm2 tin chlorideNumber Positive4 Participants
All SubjectsNumber of Participants With Patch Test Responses0.037 mg/cm2 tin chlorideNumber Negative107 Participants
All SubjectsNumber of Participants With Patch Test Responses0.037 mg/cm2 tin chlorideNumber not tested10 Participants
All SubjectsNumber of Participants With Patch Test Responses0.11 mg/cm2 tin chlorideNumber Positive25 Participants
All SubjectsNumber of Participants With Patch Test Responses0.11 mg/cm2 tin chlorideNumber Negative86 Participants
All SubjectsNumber of Participants With Patch Test Responses0.11 mg/cm2 tin chlorideNumber not tested10 Participants
All SubjectsNumber of Participants With Patch Test Responses0.33 mg/cm2 tin chlorideNumber Positive65 Participants
All SubjectsNumber of Participants With Patch Test Responses0.33 mg/cm2 tin chlorideNumber Negative45 Participants
All SubjectsNumber of Participants With Patch Test Responses0.33 mg/cm2 tin chlorideNumber not tested11 Participants
All SubjectsNumber of Participants With Patch Test Responses0.055 mg Ti/cm2 titanium citrateNumber Positive1 Participants
All SubjectsNumber of Participants With Patch Test Responses0.055 mg Ti/cm2 titanium citrateNumber Negative108 Participants
All SubjectsNumber of Participants With Patch Test Responses0.055 mg Ti/cm2 titanium citrateNumber not tested12 Participants
All SubjectsNumber of Participants With Patch Test Responses0.11 mg Ti/cm2 titanium citrateNumber Positive2 Participants
All SubjectsNumber of Participants With Patch Test Responses0.11 mg Ti/cm2 titanium citrateNumber Negative107 Participants
All SubjectsNumber of Participants With Patch Test Responses0.11 mg Ti/cm2 titanium citrateNumber not tested12 Participants
All SubjectsNumber of Participants With Patch Test Responses0.22 mg Ti/cm2 titanium citrateNumber Positive2 Participants
All SubjectsNumber of Participants With Patch Test Responses0.22 mg Ti/cm2 titanium citrateNumber Negative106 Participants
All SubjectsNumber of Participants With Patch Test Responses0.22 mg Ti/cm2 titanium citrateNumber not tested13 Participants
All SubjectsNumber of Participants With Patch Test Responses0.07 mg Ti/cm2 titanium lactateNumber Positive2 Participants
All SubjectsNumber of Participants With Patch Test Responses0.07 mg Ti/cm2 titanium lactateNumber Negative107 Participants
All SubjectsNumber of Participants With Patch Test Responses0.07 mg Ti/cm2 titanium lactateNumber not tested12 Participants
All SubjectsNumber of Participants With Patch Test Responses0.14 mg Ti/cm2 titanium lactateNumber Positive2 Participants
All SubjectsNumber of Participants With Patch Test Responses0.14 mg Ti/cm2 titanium lactateNumber Negative107 Participants
All SubjectsNumber of Participants With Patch Test Responses0.14 mg Ti/cm2 titanium lactateNumber not tested12 Participants
All SubjectsNumber of Participants With Patch Test Responses0.28 mg Ti/cm2 titanium lactateNumber Positive4 Participants
All SubjectsNumber of Participants With Patch Test Responses0.28 mg Ti/cm2 titanium lactateNumber Negative105 Participants
All SubjectsNumber of Participants With Patch Test Responses0.28 mg Ti/cm2 titanium lactateNumber not tested12 Participants
All SubjectsNumber of Participants With Patch Test Responses0.060 mg Ti/cm2 potassium titanium oxide oxalateNumber Positive1 Participants
All SubjectsNumber of Participants With Patch Test Responses0.060 mg Ti/cm2 potassium titanium oxide oxalateNumber Negative108 Participants
All SubjectsNumber of Participants With Patch Test Responses0.060 mg Ti/cm2 potassium titanium oxide oxalateNumber not tested12 Participants
All SubjectsNumber of Participants With Patch Test Responses0.12 mg Ti/cm2 potassium titanium oxide oxalateNumber Positive5 Participants
All SubjectsNumber of Participants With Patch Test Responses0.12 mg Ti/cm2 potassium titanium oxide oxalateNumber Negative104 Participants
All SubjectsNumber of Participants With Patch Test Responses0.12 mg Ti/cm2 potassium titanium oxide oxalateNumber not tested12 Participants
All SubjectsNumber of Participants With Patch Test Responses0.24 mg Ti/cm2 potassium titanium oxide oxalateNumber Positive2 Participants
All SubjectsNumber of Participants With Patch Test Responses0.24 mg Ti/cm2 potassium titanium oxide oxalateNumber Negative107 Participants
All SubjectsNumber of Participants With Patch Test Responses0.24 mg Ti/cm2 potassium titanium oxide oxalateNumber not tested12 Participants
All SubjectsNumber of Participants With Patch Test Responses0.055 mg Ti/cm2 ammonium titanium oxide oxalateNumber Positive13 Participants
All SubjectsNumber of Participants With Patch Test Responses0.055 mg Ti/cm2 ammonium titanium oxide oxalateNumber Negative96 Participants
All SubjectsNumber of Participants With Patch Test Responses0.055 mg Ti/cm2 ammonium titanium oxide oxalateNumber not tested12 Participants
All SubjectsNumber of Participants With Patch Test Responses0.11 mg Ti/cm2 ammonium titanium oxide oxalateNumber Positive21 Participants
All SubjectsNumber of Participants With Patch Test Responses0.11 mg Ti/cm2 ammonium titanium oxide oxalateNumber Negative88 Participants
All SubjectsNumber of Participants With Patch Test Responses0.11 mg Ti/cm2 ammonium titanium oxide oxalateNumber not tested12 Participants
All SubjectsNumber of Participants With Patch Test Responses0.22 mg Ti/cm2 ammonium titanium oxide oxalateNumber Positive18 Participants
All SubjectsNumber of Participants With Patch Test Responses0.22 mg Ti/cm2 ammonium titanium oxide oxalateNumber Negative91 Participants
All SubjectsNumber of Participants With Patch Test Responses0.22 mg Ti/cm2 ammonium titanium oxide oxalateNumber not tested12 Participants
All SubjectsNumber of Participants With Patch Test Responses0.0042 mg V/cm2 vanadium chlorideNumber Positive0 Participants
All SubjectsNumber of Participants With Patch Test Responses0.0042 mg V/cm2 vanadium chlorideNumber Negative106 Participants
All SubjectsNumber of Participants With Patch Test Responses0.0042 mg V/cm2 vanadium chlorideNumber not tested15 Participants
All SubjectsNumber of Participants With Patch Test Responses0.0083 mg V/cm2 vanadium chlorideNumber Positive4 Participants
All SubjectsNumber of Participants With Patch Test Responses0.0083 mg V/cm2 vanadium chlorideNumber Negative102 Participants
All SubjectsNumber of Participants With Patch Test Responses0.0083 mg V/cm2 vanadium chlorideNumber not tested15 Participants
All SubjectsNumber of Participants With Patch Test Responses0.025 mg V/cm2 vanadium chlorideNumber Positive25 Participants
All SubjectsNumber of Participants With Patch Test Responses0.025 mg V/cm2 vanadium chlorideNumber Negative81 Participants
All SubjectsNumber of Participants With Patch Test Responses0.025 mg V/cm2 vanadium chlorideNumber not tested15 Participants
All SubjectsNumber of Participants With Patch Test Responses0.050 mg V/cm2 vanadium chlorideNumber Positive46 Participants
All SubjectsNumber of Participants With Patch Test Responses0.050 mg V/cm2 vanadium chlorideNumber Negative60 Participants
All SubjectsNumber of Participants With Patch Test Responses0.050 mg V/cm2 vanadium chlorideNumber not tested15 Participants
All SubjectsNumber of Participants With Patch Test Responses0.0042 mg V/cm2 vanadium sulfateNumber Positive6 Participants
All SubjectsNumber of Participants With Patch Test Responses0.0042 mg V/cm2 vanadium sulfateNumber Negative100 Participants
All SubjectsNumber of Participants With Patch Test Responses0.0042 mg V/cm2 vanadium sulfateNumber not tested15 Participants
All SubjectsNumber of Participants With Patch Test Responses0.0083 mg V/cm2 vanadium sulfateNumber Positive7 Participants
All SubjectsNumber of Participants With Patch Test Responses0.0083 mg V/cm2 vanadium sulfateNumber Negative99 Participants
All SubjectsNumber of Participants With Patch Test Responses0.0083 mg V/cm2 vanadium sulfateNumber not tested15 Participants
All SubjectsNumber of Participants With Patch Test Responses0.025 mg V/cm2 vanadium sulfateNumber Positive10 Participants
All SubjectsNumber of Participants With Patch Test Responses0.025 mg V/cm2 vanadium sulfateNumber Negative96 Participants
All SubjectsNumber of Participants With Patch Test Responses0.025 mg V/cm2 vanadium sulfateNumber not tested15 Participants
All SubjectsNumber of Participants With Patch Test Responses0.050 mg V/cm2 vanadium sulfateNumber Positive30 Participants
All SubjectsNumber of Participants With Patch Test Responses0.050 mg V/cm2 vanadium sulfateNumber Negative76 Participants
All SubjectsNumber of Participants With Patch Test Responses0.050 mg V/cm2 vanadium sulfateNumber not tested15 Participants
All SubjectsNumber of Participants With Patch Test Responses0.013 mg/cm2 zinc chlorideNumber Positive2 Participants
All SubjectsNumber of Participants With Patch Test Responses0.013 mg/cm2 zinc chlorideNumber Negative109 Participants
All SubjectsNumber of Participants With Patch Test Responses0.040 mg/cm2 zinc chlorideNumber Positive7 Participants
All SubjectsNumber of Participants With Patch Test Responses0.040 mg/cm2 zinc chlorideNumber Negative104 Participants
All SubjectsNumber of Participants With Patch Test Responses0.040 mg/cm2 zinc chlorideNumber not tested10 Participants
All SubjectsNumber of Participants With Patch Test Responses0.080 mg/cm2 zinc chlorideNumber Positive13 Participants
All SubjectsNumber of Participants With Patch Test Responses0.080 mg/cm2 zinc chlorideNumber Negative98 Participants
All SubjectsNumber of Participants With Patch Test Responses0.080 mg/cm2 zinc chlorideNumber not tested10 Participants
All SubjectsNumber of Participants With Patch Test Responses0.24 mg/cm2 zinc chlorideNumber Positive69 Participants
All SubjectsNumber of Participants With Patch Test Responses0.24 mg/cm2 zinc chlorideNumber Negative42 Participants
All SubjectsNumber of Participants With Patch Test Responses0.24 mg/cm2 zinc chlorideNumber not tested10 Participants
Comparison: Comparison between 0.12 mg/cm2 copper sulfate and copper sulfate 2% in petrolatum95% CI: [-0.01, 0.58]
Comparison: Comparison between 0.24 mg/cm2 manganese chloride and manganese chloride 2% in petrolatum95% CI: [0.24, 0.66]
Comparison: Comparison between 0.33 mg/cm2 tin chloride and tin chloride 1% in petrolatum95% CI: [0.07, 0.38]
Comparison: Comparison between 0.22 mg Ti/cm2 ammonium titanium oxide oxalate and ammnium titanium oxide oxalate 19% in petrolatum95% CI: [0.15, 0.65]
Comparison: Comparison between 0.050 mg/cm2 vanadium sulfate and vanadium sulfate 1.5% in petrolatum95% CI: [0.3, 0.73]
Comparison: Comparison betweenm 0.24 mg/cm2 zinc chloride and zinc chloride 2% in petrolatum95% CI: [0.07, 0.38]
Secondary

Chip Irritation

Chip irritation was measured according to the following scale: None- No irritation, Weak- Faint to definite pink erythema, Moderate- Moderate erythema, definite redness, Strong- Severe erythema, very intense redness. Following visit 6, the Investigators rated Chip irritation based on the overall trend observed at visits 2-6. Irritation at visit 2 that resolved by visit 3 was considered none. Skin under occlusion from an adhesive material would be expected to have minimal irritation shortly after the panel is removed. Irritation that persisted or increased in severity beyond visit 3 but resolved by the following visit would have been rated as irritant. An allergic response was considered if irritation persisted beyond visit 3, increased in severity and had symptoms consistent with criteria used to score positive skin reactions according to standard patch testing guidelines established by the International Contact Dermatitis Research Group.

Time frame: Visit 2 (day 2), visit 3 (day 3-4), visit 4 (day 7-8) visit 5 (day 10-14), visit 6 (day 19-23) with overall assessment by the Investigator following visit 6

ArmMeasureGroupCategoryValue (COUNT_OF_PARTICIPANTS)
All SubjectsChip IrritationPanel 2 Chip IrritationNone111 Participants
All SubjectsChip IrritationPanel 1 Chip IrritationNone105 Participants
All SubjectsChip IrritationPanel 1 Chip IrritationIrritant0 Participants
All SubjectsChip IrritationPanel 1 Chip IrritationAllergic0 Participants
All SubjectsChip IrritationPanel 1 Chip IrritationNot Tested16 Participants
All SubjectsChip IrritationPanel 2 Chip IrritationIrritant0 Participants
All SubjectsChip IrritationPanel 2 Chip IrritationAllergic0 Participants
All SubjectsChip IrritationPanel 2 Chip IrritationNot Tested10 Participants
All SubjectsChip IrritationPanel 3 Chip IrritationNone104 Participants
All SubjectsChip IrritationPanel 3 Chip IrritationIrritant0 Participants
All SubjectsChip IrritationPanel 3 Chip IrritationAllergic0 Participants
All SubjectsChip IrritationPanel 3 Chip IrritationNot Tested17 Participants
All SubjectsChip IrritationPanel 4 Chip IrritationNone109 Participants
All SubjectsChip IrritationPanel 4 Chip IrritationIrritant0 Participants
All SubjectsChip IrritationPanel 4 Chip IrritationAllergic0 Participants
All SubjectsChip IrritationPanel 4 Chip IrritationNot Tested12 Participants
All SubjectsChip IrritationPanel 5 Chip IrritationNone106 Participants
All SubjectsChip IrritationPanel 5 Chip IrritationIrritant0 Participants
All SubjectsChip IrritationPanel 5 Chip IrritationAllergic0 Participants
All SubjectsChip IrritationPanel 5 Chip IrritationNot Tested15 Participants
All SubjectsChip IrritationPanel 6 Chip IrritationNone120 Participants
All SubjectsChip IrritationPanel 6 Chip IrritationIrritant0 Participants
All SubjectsChip IrritationPanel 6 Chip IrritationAllergic0 Participants
All SubjectsChip IrritationPanel 6 Chip IrritationNot Tested1 Participants
Secondary

Number of Subjects With Panel Adhesion

Panel Adhesion was measured at Visit 2 (day 2) prior to panel removal according to the following scale: Excellent- Skin contact good; all tape edges adherent; all allergens in contact with the skin, Good- Skin contact acceptable; some tape edges lifting; all allergens in contact with the skin, Poor- Little to no skin contact with panel; one or more allergens not in contact with the skin, Detached- Panel completely off the skin; none of the allergens in contact with the skin

Time frame: Day 2, visit 2 prior to panel removal

ArmMeasureGroupCategoryValue (COUNT_OF_PARTICIPANTS)
All SubjectsNumber of Subjects With Panel AdhesionPanel 6 AdhesionPoor2 Participants
All SubjectsNumber of Subjects With Panel AdhesionPanel 1 AdhesionExcellent102 Participants
All SubjectsNumber of Subjects With Panel AdhesionPanel 1 AdhesionGood1 Participants
All SubjectsNumber of Subjects With Panel AdhesionPanel 1 AdhesionPoor2 Participants
All SubjectsNumber of Subjects With Panel AdhesionPanel 1 AdhesionDetached0 Participants
All SubjectsNumber of Subjects With Panel AdhesionPanel 1 AdhesionNot Tested16 Participants
All SubjectsNumber of Subjects With Panel AdhesionPanel 2 AdhesionExcellent103 Participants
All SubjectsNumber of Subjects With Panel AdhesionPanel 2 AdhesionGood3 Participants
All SubjectsNumber of Subjects With Panel AdhesionPanel 2 AdhesionPoor5 Participants
All SubjectsNumber of Subjects With Panel AdhesionPanel 2 AdhesionDetached0 Participants
All SubjectsNumber of Subjects With Panel AdhesionPanel 2 AdhesionNot Tested10 Participants
All SubjectsNumber of Subjects With Panel AdhesionPanel 3 AdhesionExcellent98 Participants
All SubjectsNumber of Subjects With Panel AdhesionPanel 3 AdhesionGood3 Participants
All SubjectsNumber of Subjects With Panel AdhesionPanel 3 AdhesionPoor3 Participants
All SubjectsNumber of Subjects With Panel AdhesionPanel 3 AdhesionDetached0 Participants
All SubjectsNumber of Subjects With Panel AdhesionPanel 3 AdhesionNot Tested17 Participants
All SubjectsNumber of Subjects With Panel AdhesionPanel 4 AdhesionExcellent105 Participants
All SubjectsNumber of Subjects With Panel AdhesionPanel 4 AdhesionGood1 Participants
All SubjectsNumber of Subjects With Panel AdhesionPanel 4 AdhesionPoor3 Participants
All SubjectsNumber of Subjects With Panel AdhesionPanel 4 AdhesionDetached0 Participants
All SubjectsNumber of Subjects With Panel AdhesionPanel 4 AdhesionNot Tested12 Participants
All SubjectsNumber of Subjects With Panel AdhesionPanel 5 AdhesionExcellent100 Participants
All SubjectsNumber of Subjects With Panel AdhesionPanel 5 AdhesionGood6 Participants
All SubjectsNumber of Subjects With Panel AdhesionPanel 5 AdhesionPoor0 Participants
All SubjectsNumber of Subjects With Panel AdhesionPanel 5 AdhesionDetached0 Participants
All SubjectsNumber of Subjects With Panel AdhesionPanel 5 AdhesionNot Tested15 Participants
All SubjectsNumber of Subjects With Panel AdhesionPanel 6 AdhesionExcellent113 Participants
All SubjectsNumber of Subjects With Panel AdhesionPanel 6 AdhesionGood5 Participants
All SubjectsNumber of Subjects With Panel AdhesionPanel 6 AdhesionDetached0 Participants
All SubjectsNumber of Subjects With Panel AdhesionPanel 6 AdhesionNot Tested1 Participants
Secondary

Tape Irritation

Tape irritation was measured according to the following scale: None- No irritation, Weak- Faint to definite pink erythema, Moderate- Moderate erythema, definite redness, Strong- Severe erythema, very intense redness. Following visit 6, the Investigators rated tape irritation based on the overall trend observed at visits 2-6. Irritation at visit 2 that resolved by visit 3 was considered none. Skin under occlusion from an adhesive material would be expected to have minimal irritation shortly after the panel is removed. Irritation that persisted or increased in severity beyond visit 3 but resolved by the following visit would have been rated as irritant. An allergic response was considered if irritation persisted beyond visit 3, increased in severity and had symptoms consistent with criteria used to score positive skin reactions according to standard patch testing guidelines established by the International Contact Dermatitis Research Group.

Time frame: Visit 2 (day 2), visit 3 (day 3-4), visit 4 (day 7-8) visit 5 (day 10-14), visit 6 (day 19-23) with overall assessment by the Investigator following visit 6

ArmMeasureGroupCategoryValue (COUNT_OF_PARTICIPANTS)
All SubjectsTape IrritationPanel 1 Tape IrritationNone103 Participants
All SubjectsTape IrritationPanel 1 Tape IrritationIrritant2 Participants
All SubjectsTape IrritationPanel 1 Tape IrritationAllergic0 Participants
All SubjectsTape IrritationPanel 1 Tape IrritationNot Tested16 Participants
All SubjectsTape IrritationPanel 2 Tape IrritationNone109 Participants
All SubjectsTape IrritationPanel 2 Tape IrritationIrritant2 Participants
All SubjectsTape IrritationPanel 2 Tape IrritationAllergic0 Participants
All SubjectsTape IrritationPanel 2 Tape IrritationNot Tested10 Participants
All SubjectsTape IrritationPanel 3 Tape IrritationNone103 Participants
All SubjectsTape IrritationPanel 3 Tape IrritationIrritant1 Participants
All SubjectsTape IrritationPanel 3 Tape IrritationAllergic0 Participants
All SubjectsTape IrritationPanel 3 Tape IrritationNot Tested17 Participants
All SubjectsTape IrritationPanel 4 Tape IrritationNone108 Participants
All SubjectsTape IrritationPanel 4 Tape IrritationIrritant1 Participants
All SubjectsTape IrritationPanel 4 Tape IrritationAllergic0 Participants
All SubjectsTape IrritationPanel 4 Tape IrritationNot Tested12 Participants
All SubjectsTape IrritationPanel 5 Tape IrritationNone105 Participants
All SubjectsTape IrritationPanel 5 Tape IrritationIrritant1 Participants
All SubjectsTape IrritationPanel 5 Tape IrritationAllergic0 Participants
All SubjectsTape IrritationPanel 5 Tape IrritationNot Tested15 Participants
All SubjectsTape IrritationPanel 6 Tape IrritationNone119 Participants
All SubjectsTape IrritationPanel 6 Tape IrritationIrritant1 Participants
All SubjectsTape IrritationPanel 6 Tape IrritationAllergic0 Participants
All SubjectsTape IrritationPanel 6 Tape IrritationNot Tested1 Participants

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026