Table of Contents
- Trial overview
- Who is being studied
- What is being tested
- Trial design and phase
- Main outcomes and endpoints
- Trial status and enrollment
Trial overview
The available records describe a metal panel patch test that includes MANGANESE CHLORIDE TETRAHYDRATE as one of several metal allergens studied in people with skin allergy problems.[1][1] The study is designed to evaluate diagnostic efficacy, safety, and the performance of the panel device used in testing.[1][1]
Who is being studied
The target population includes people with allergic contact dermatitis, and one record also lists eczema.[1] These conditions matter because the trial is looking at whether the patch test can help identify metal-related skin reactions in affected people.[1]
What is being tested
MANGANESE CHLORIDE TETRAHYDRATE is included in the trial as a manganese allergen in a group of metal allergens.[1][1] Other listed allergens in the panel include nickel, copper, tin, zinc, gold, sodium, vanadium, cobalt, chromium, and ammonium titanium oxide oxalate.[1][1]
The test is applied by cutaneous use, which means it is used on the skin.[1][1] The study compares a hydrogel-based investigational method with a petrolatum-based reference method.[1][1]
Trial design and phase
Both records describe an interventional study, which means researchers actively test the patch method rather than only observing people.[1][1] Both are listed as Phase 3 studies, showing that the test is being evaluated in a larger group of participants.[1][1]
One record shows enrollment of 300 people, while the other shows enrollment of 395 people.[1][1] The two records have the same NCT ID, NCT04500834, and describe the same metal panel patch test.[1][1]
Main outcomes and endpoints
The main outcome is concordance, which means agreement between the hydrogel patch test and the petrolatum patch test.[1][1] The study measures this agreement with Cohen’s kappa, a statistic that checks how much two methods agree beyond chance, and also with positive and negative percent agreement.[1][1]
The brief summary states that the objective is to evaluate the diagnostic efficacy and safety of the investigational allergens and the overall safety and performance of the panel device constituent.[1][1] In simple terms, the trial is asking whether the patch test works well and whether the test setup is safe and reliable.[1][1]
Trial status and enrollment
One record for NCT04500834 is marked Withdrawn, and the other is marked Authorised.[1][1] Because both records describe the same study ID and same trial topic, they appear to be two records for the same patch test study with different status information.[1][1]
The enrollment numbers differ between the two records, with 300 in one record and 395 in the other.[1][1] This suggests the study information may have been updated or recorded differently across the two entries.[1][1]



