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CompletedNCT02153697Updated Dec 16, 2014

Comparative Study of the Therapy of Solar Lentigines With a Q-switched Rubin Laser Versus a Bleaching Cream

An interventional study of Q-switched SINON Ruby Laser and Pigmanorm Cream in Solar Lentigines, sponsored by University of Zurich. Completed at 1 site in Switzerland. Open to participants aged 50 Years to 80 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2014-12-16.

Sponsored by University of Zurich · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
15
Allocation
Not applicable
Ages
50 Years to 80 Years
Sex
All
01

Study summary

Benign pigmented lesions as solar lentigines are a common finding in Caucasian individuals. Their removal may be requested for aesthetic reasons.

The goal of the study is comparing the efficacy and tolerance of two different therapy modalities established for treating solar lentigines.

The right back of the hand side will be treated with the Q-switched SINON Rubin 694nm Laser, the left back of the hand side with a hydrochinon containing bleaching cream (Pigmanorm® cream).

The investigators estimate that a physical therapy with a Q-switched Rubin laser system is more effective in the removal of solar lentigines than a topical chemical therapy with a hydrochinon containing bleaching cream.

02

Conditions studied

  • Solar Lentigines

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Keywords

  • solar lentigines
  • Q-switches Laser
  • bleaching cream
03

In context

Lentigo

28 studies on the registry are indexed under Lentigo; 2 are open to participants now.

This study's enrollment of 15 is below the median of 30 across 25 interventional studies indexed under Lentigo.

Browse Lentigo studies →

Lead sponsor

University of Zurich is the lead sponsor of 1,049 studies on the registry; 133 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
50 Years to 80 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Age ≥ 50
  • female patient must be in (> 2 years)
  • Clinically and dermoscopic confirmed solar lentigines on both sides back of the hands

Exclusion criteria

Exclusion Criteria:

  • non melanocytic pigmentation, vitiligo, melanoma and suspicion of melanoma
  • intolerance against an ingredience of pigmanorm® cream
  • acute inflammation or eczema on back of the hands
  • patients with renal disease
  • intake of photosensibilisating medication in the past 3 months
  • treatment of solar lentigines on back of the hands in the past 6 months
  • solarium or sun exposure about 6 weeks before and after treatment
  • immunsuppressed patients
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Postmenopausal

Periods have stopped for good: usually no period for 12 months in a row without another medical reason, sometimes confirmed by a blood test (FSH).

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
15 participants (actual)

Study arms

  • Experimental
    Pigmanorm Cream, Q-switched Ruby laser,solar lentigines

    Solar lentigines on the left back of the hand side are treated with Pigmanorm Cream once a day for 7 weeks. Solar lentigines on the right back of the hand side are treated with a Q-switched Ruby laser at Baseline and if required at day 28.

    Device: Q-switched SINON Ruby Laser · Drug: Pigmanorm Cream

Interventions

  • DeviceQ-switched SINON Ruby Laser

    Solar lentigines on the right back of the hand side are treated with the Q-switched SINON Ruby Laser at Baseline and if required at day 28.

  • DrugPigmanorm Cream

    Solar lentigines on the left back of the hand side are treated once a day during 7 weeks with Pigmanorm cream, a bleaching cream containing hydrochinon.

06

What researchers measure

Primary outcomes

  1. Evaluation of clearing of pigmentation

    The primary efficacy objective is to evaluate the clearing of pigmentation(percentage of clearing) following a quartile scale of poor (25% clearance), fair (26-50% clearance), good (51-75% clearance), and excellent (76-100% clearance).

    Time frame: 140 days (Baseline, Day 28, Day 56, Day 140)

Secondary outcomes

  1. Evaluation of safety profile

    Adverse effects are noted at each visit.

    Time frame: 140 days (Baseline, Day 28, Day 56, Day 140)

  2. Change from Baseline in Pigmentation at day 140

    The clearing of pigmentation (percentage of clearing) following a quartile scale of poor (25% clearance), fair (26-50% clearance), good (51-75% clearance), and excellent (76-100% clearance) is assessed at day 140 from Baseline ( = 3 months after finishing treatment).

    Time frame: Long term outcome is assessed 3 months after finishing treatment.

07

Study locations

1 site
  • University Hospital Zurich, Division of Dermatology
    Zurich, Switzerland
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Dec 16, 2014, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT02153697
Responsible party
Sponsor
First posted
Jun 3, 2014
Start date
Mar 2014
Primary completion
Oct 2014
Completion
Oct 2014
Last update
Dec 16, 2014

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Dec 2014. You cannot join it, but the record below documents what was studied.

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