Trial Outcomes & Findings for The Effect of Violet Device Dosed Ultra Violet-C Light (UV-C) Exposure on Healthy Hand Skin (NCT NCT05313555)

Results Overview

Recruitment status

TERMINATED

Study phase

NA

Target enrollment

23 participants

Primary outcome timeframe

Day 1 (visit 1 after light therapy)

Results posted on

2026-05-28

Participant Flow

Participant milestones

Participant milestones
Measure	Ultraviolet Lights (UV-B) Ultraviolet Light (UV-B): This control group will receive a UV-B exposure as a positive control. Participants will have punch biopsies after exposure.	Ultraviolet Lights (UV-C) - 1 Use Ultraviolet lights (UV-C) - 1 cycle: Violet is tabletop device that emits filtered UV-C (200nm-230nm; peak at 222nm). Participants will be exposed to 1 cycle of the Violet. The subject will be exposed for no more than 5 minutes and 20 seconds in total. Participants will have punch biopsies after exposure.	Ultraviolet Lights (UV-C) - 10 Uses Ultraviolet lights (UV-C) - 10 cycles: Violet is tabletop device that emits filtered UV-C (200nm-230nm; peak at 222nm). Participants will be exposed to 10 cycles of the Violet. The subject will be exposed for no more than 5 minutes and 20 seconds in total. Participants will have punch biopsies after exposure.	Ultraviolet Lights (UV-C) - 15 Uses Ultraviolet lights (UV-C) - 15 cycles: Violet is tabletop device that emits filtered UV-C (200nm-230nm; peak at 222nm). Participants will be exposed to 15 cycles of the Violet. The subject will be exposed for no more than 5 minutes and 20 seconds in total. Participants will have punch biopsies after exposure.	Ultraviolet Lights (UV-C) - 25 Uses Ultraviolet lights (UV-C) - 25 cycles: Violet is tabletop device that emits filtered UV-C (200nm-230nm; peak at 222nm). Participants will be exposed to 25 cycles of the Violet. The subject will be exposed for no more than 5 minutes and 20 seconds in total. Participants will have punch biopsies after exposure.
Overall Study STARTED	3	6	4	6	4
Overall Study COMPLETED	3	6	4	6	4
Overall Study NOT COMPLETED	0	0	0	0	0

Reasons for withdrawal

Withdrawal data not reported

Baseline Characteristics

Race and Ethnicity were not collected from any participant.

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure	Ultraviolet Lights (UV-B) n=3 Participants Ultraviolet Light (UV-B): This control group will receive a UV-B exposure as a positive control. Participants will have punch biopsies after exposure.	Ultraviolet Lights (UV-C) - 1 Use n=6 Participants Ultraviolet lights (UV-C) - 1 cycle: Violet is tabletop device that emits filtered UV-C (200nm-230nm; peak at 222nm). Participants will be exposed to 1 cycle of the Violet. The subject will be exposed for no more than 5 minutes and 20 seconds in total. Participants will have punch biopsies after exposure.	Ultraviolet Lights (UV-C) - 10 Uses n=4 Participants Ultraviolet lights (UV-C) - 10 cycles: Violet is tabletop device that emits filtered UV-C (200nm-230nm; peak at 222nm). Participants will be exposed to 10 cycles of the Violet. The subject will be exposed for no more than 5 minutes and 20 seconds in total. Participants will have punch biopsies after exposure.	Ultraviolet Lights (UV-C) - 15 Uses n=6 Participants Ultraviolet lights (UV-C) - 15 cycles: Violet is tabletop device that emits filtered UV-C (200nm-230nm; peak at 222nm). Participants will be exposed to 15 cycles of the Violet. The subject will be exposed for no more than 5 minutes and 20 seconds in total. Participants will have punch biopsies after exposure.	Ultraviolet Lights (UV-C) - 25 Uses n=4 Participants Ultraviolet lights (UV-C) - 25 cycles: Violet is tabletop device that emits filtered UV-C (200nm-230nm; peak at 222nm). Participants will be exposed to 25 cycles of the Violet. The subject will be exposed for no more than 5 minutes and 20 seconds in total. Participants will have punch biopsies after exposure.	Total n=23 Participants Total of all reporting groups
Age, Continuous	20.33 years n=3 Participants	28.83 years n=6 Participants	23.5 years n=4 Participants	36.17 years n=6 Participants	26.5 years n=4 Participants	27.74 years n=23 Participants
Sex: Female, Male Female	3 Participants n=3 Participants	5 Participants n=6 Participants	3 Participants n=4 Participants	6 Participants n=6 Participants	4 Participants n=4 Participants	21 Participants n=23 Participants
Sex: Female, Male Male	0 Participants n=3 Participants	1 Participants n=6 Participants	1 Participants n=4 Participants	0 Participants n=6 Participants	0 Participants n=4 Participants	2 Participants n=23 Participants
Race and Ethnicity Not Collected	—	—	—	—	—	0 Participants Race and Ethnicity were not collected from any participant.
Region of Enrollment United States	3 Participants n=3 Participants	6 Participants n=6 Participants	4 Participants n=4 Participants	6 Participants n=6 Participants	4 Participants n=4 Participants	23 Participants n=23 Participants

PRIMARY outcome

Timeframe: Day 1 (visit 1 after light therapy)

Population: The sponsoring company closed unexpectedly after biopsy samples were obtained from participants, but before the samples could be analyzed. Sample analysis could not take place due to lack of funding from the sponsor and will not be done in the future. Consequently, there is no data to report, as the physical samples generated no data.