Squamous Cell CarcinomasNCT04142489
In Vivo Damage Induced bu UV in the Epidermis of the Scalp
A study testing solar irradiation and biopsies in people with Squamous Cell Carcinomas, run by Centre Hospitalier Universitaire de Nice at 1 site in France.
Trial summary
Squamous cell carcinomas (SCC) are the second most common skin cancer in humans. The incidence of SCCs in the USA in 2012 was estimated at 700,000 casesSCCs have a metastatic course in 3% to 5% of cases that is of poor prognosis. Read more about this study
- Who is it for?
- Ages 40 to 60 years, men onlyHealthy volunteers can take part
- Conditions the study is for
- Squamous Cell Carcinomas
- What is being tested?
- solar irradiation and biopsies
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 10 participants
- Where
- 1 siteFrance
- Study dates
- 1 Feb 2021to 1 Jul 2021
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 40 to 60 years
- Men only
- Healthy volunteers accepted
- Adult
Who may be able to join
- Male subject
- Subject aged 40 to 60 years
- Subject of phototype III or IV
- Subject with no skin lesions on the scalp and forearms
- Subject who has not been exposed to the sun for at least 1 month
- Subject affiliated to social security
- Subject who signed the informed consent form
Who cannot join
- Subjects with photosensitivity,
- Subject taking photosensitizing drugs
- Subjects with a history of skin cancer
- Subjects with abnormal healing
- Subjects with immunosuppression
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Clinical Study of In Vivo Damage Induced bu UV in the Epidermis of the Scalp
Squamous cell carcinomas (SCC) are the second most common skin cancer in humans. The incidence of SCCs in the USA in 2012 was estimated at 700,000 casesSCCs have a metastatic course in 3% to 5% of cases that is of poor prognosis. In men, the SCCs of the scalp represent the most frequent location of the head and neck, the 3rd location of the whole body. The SCCs of the scalp are more undifferentiated than in other locations. In addition, actinic keratoses of scalp, precursors of SCC, are more resistant to treatment than in other areas. These particularities of the SCCs of the scalp suggest the existence of specific factors at the epidermis level of the scalp.
UV-induced damage to DNA is the defining event in skin photocarcinogenesis. It has already been shown that DNA damage induced by UV and the kinetics of repair of this damage may vary with age or phototype of patients, but the topographic variation of DNA damage has never been studied, although it is known that gene expression in skin cells may differ from one region of the body to another.
the hypothesis is therefore that the particular characteristics of KAs and SCCs at the scal level could be explained by an increased sensitivity to UV-induced damage. It is planned to study UV-induced damage and its repair at the scalp level in humans compared to the forearm.
- Conditions
- Squamous Cell Carcinomas
- Being tested
- solar irradiation and biopsies
- Medical subject headings
- Carcinoma, Squamous Cell
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
solar irradiation and biopsiesOther
the minimum erythematous dose (DEM) will be calculated using a solar irradiator on the scalp (study area) and on a forearm (control area). On D2 (D1+24h) a solar irradiation corresponding to 2 DEM will be performed on a region of the scalp (studied area), as well as on a forearm (control area). A 3mm biopsy will be performed 15mn after irradiation in these 2 regions to study DNA damage. At D4 (D2+48h) a 2nd biopsy of 3 mm will be performed to study the repair of induced DNA damage.
| Study group | Role | What they receive |
|---|---|---|
| UV and biopsy | Other | Minimum erythematous dose (DEM) will be calculated using a solar irradiator on the scalp (study area) and on a forearm (control area). On D2 (D1+24h) a solar irradiation corresponding to 2 DEM will be performed on a region of the scalp (studied area), as well as on a forearm (control area). A 3mm biopsy will be performed 15mn after irradiation in these 2 regions to study DNA damage. At D4 (D2+48h) a 2nd biopsy of 3 mm will be performed to study the repair of induced DNA damage. The study of DNA damage induced by UV will be done by immunohistochemical analysis of markers validated in previous studies: CPD=pyridine dimers, 6.4 PP= "6.4 photoproducts", and p53. Immunolabeling will be performed on skin biopsies collected 15 minutes after UV exposure and 48 hours after UV exposure. Receives: Other: solar irradiation and biopsies |
What is being measured
The primary outcome is the main question the study is designed to answer.
number oh epidermal cells positives
epidermal cells with positive immunolabeling for DNA damage markers (CPD, 6.4PP, p53) count.
Measured: 6 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted29 Oct 2019
- Study start1 Feb 2021
- Primary completion10 May 2021
- Study completion1 Jul 2021
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Squamous Cell CarcinomasStudies of the same condition, open and under way.
- More trials run by Centre Hospitalier Universitaire de NiceThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Other
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 10 participants (actual)
Sponsor and investigators
- Lead sponsor
- Centre Hospitalier Universitaire de Nice
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT04142489
- Sponsor's protocol ID
- 19-AOIP-02
- Status last verified
- May 2022
- First submitted
- 25 Oct 2019
- Last updated
- 6 May 2022
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 6 May 2022. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Clinical Study of In Vivo Damage Induced bu UV in the Epidermis of the Scalp
- ClinicalTrials.gov ID
- NCT04142489
- Acronym / sponsor ID
- 19-AOIP-02
- Conditions
- Squamous Cell Carcinomas
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 10 participants (actual)
- Lead sponsor
- Centre Hospitalier Universitaire de NiceUniversity, hospital or other
- Study start
- 1 Feb 2021 (actual)
- Primary completion
- 10 May 2021 (actual)
- Study completion
- 1 Jul 2021 (actual)
- First posted
- 29 Oct 2019 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Squamous cell carcinomas (SCC) are the second most common skin cancer in humans. The incidence of SCCs in the USA in 2012 was estimated at 700,000 casesSCCs have a metastatic course in 3% to 5% of cases that is of poor prognosis. In men, the SCCs of the scalp represent the most frequent location of the head and neck, the 3rd location of the whole body. The SCCs of the scalp are more undifferentiated than in other locations. In addition, actinic keratoses of scalp, precursors of SCC, are more resistant to treatment than in other areas. These particularities of the SCCs of the scalp suggest the existence of specific factors at the epidermis level of the scalp.
UV-induced damage to DNA is the defining event in skin photocarcinogenesis. It has already been shown that DNA damage induced by UV and the kinetics of repair of this damage may vary with age or phototype of patients, but the topographic variation of DNA damage has never been studied, although it is known that gene expression in skin cells may differ from one region of the body to another.
the hypothesis is therefore that the particular characteristics of KAs and SCCs at the scal level could be explained by an increased sensitivity to UV-induced damage. It is planned to study UV-induced damage and its repair at the scalp level in humans compared to the forearm.
Study design
- Primary purpose
- Other
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| UV and biopsy | Other | Other: solar irradiation and biopsiesMinimum erythematous dose (DEM) will be calculated using a solar irradiator on the scalp (study area) and on a forearm (control area). On D2 (D1+24h) a solar irradiation corresponding to 2 DEM will be performed on a region of the scalp (studied area), as well as on a forearm (control area). A 3mm biopsy will be performed 15mn after irradiation in these 2 regions to study DNA damage. At D4 (D2+48h) a 2nd biopsy of 3 mm will be performed to study the repair of induced DNA damage. The study of DNA damage induced by UV will be done by immunohistochemical analysis of markers validated in previous studies: CPD=pyridine dimers, 6.4 PP= "6.4 photoproducts", and p53. Immunolabeling will be performed on skin biopsies collected 15 minutes after UV exposure and 48 hours after UV exposure. |
Who may qualify
- Ages
- 40 to 60 years
- Sex
- Male only
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (7 listed)
- Male subject
- Subject aged 40 to 60 years
- Subject of phototype III or IV
- Subject with no skin lesions on the scalp and forearms
- Subject who has not been exposed to the sun for at least 1 month
Key exclusion criteria (5 listed)
- Subjects with photosensitivity,
- Subject taking photosensitizing drugs
- Subjects with a history of skin cancer
- Subjects with abnormal healing
- Subjects with immunosuppression
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| solar irradiation and biopsiesthe minimum erythematous dose (DEM) will be calculated using a solar irradiator on the scalp (study area) and on a forearm (control area). On D2 (D1+24h) a solar irradiation corresponding to 2 DEM will be performed on a region of the scalp (studied area), as well as on a forearm (control area). A 3mm biopsy will be performed 15mn after irradiation in these 2 regions to study DNA damage. At D4 (D2+48h) a 2nd biopsy of 3 mm will be performed to study the repair of induced DNA damage. | Other | UV and biopsy |
Primary outcome
number oh epidermal cells positives
Time frame: 6 months
epidermal cells with positive immunolabeling for DNA damage markers (CPD, 6.4PP, p53) count.
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 6 May 2022.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing solar irradiation and biopsies in people with Squamous Cell Carcinomas, run by Centre Hospitalier Universitaire de Nice at 1 site in France.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 7 inclusion and 5 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 6 May 2022. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in France. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
number oh epidermal cells positives (time frame: 6 months). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 6 May 2022.