Follow-up Study to Evaluate Sustained Clearance Rates of Actinic Keratoses up to One Year

This is a Phase 3 longitudinal and observational study. Subjects who previously enrolled in studies GW01-0702, GW01-0703, GW01-0704, and GW01-0705 and were completely cleared of their AK lesions in the selected treatment area at the end-of-study visit will return for follow-up visits at 6 and 12 months after the EOS visit or until a recurrence of AKs.

The NCT numbers for the above mentioned studies are:

NCT00603798 - for Studies GW01-0703 and GW01-0705

NCT00605176 for Studies GW01-0702 and GW01-0704

Inclusion criteria

• Are willing and able to give informed consent;
• Have successfully completed one of the following studies: GW01-0702, GW01- 0703, GW01-0704, or GW01-0705 and have been determined to be completely clear of AK lesions at the EOS visit in the designated treatment area from the previous study
• Are willing to participate in the study as an outpatient, make visits to the study center for follow-up evaluation, and agree to comply with all study requirements.

Exclusion criteria

• None. All subjects who meet the inclusion criteria above may participate.