Subjects visited the clinic on Day 0 (administration of afamelanotide implant and porfimer sodium), Day 2 (photodynamic therapy), and Days 20 and 90 for assessments of adverse events, concomitant medication and the results of evaluation of phototoxicity.

Subjects visited the clinic on Day 0 (administration of placebo implant and porfimer sodium), Day 2 (photodynamic therapy), and Days 20 and 90 for assessments of adverse events, concomitant medication and the results of evaluation of phototoxicity.

Quality of life, as measured by the Short Form-36 Health survey (SF-36) (quality of life questionnaire). The SF-36 consists of eight scaled scores, which are the weighted sums of the questions in their section. Each scale is directly transformed into a 0-100 scale on the assumption that each question carries equal weight. The lower the score the more disability.

Subjects visited the clinic on Day 0 (administration of afamelanotide implant and porfimer sodium), Day 2 (photodynamic therapy), and Days 20 and 90 for assessments of adverse events, concomitant medication, and the results of evaluation of phototoxicity.

The planned primary efficacy endpoint was the number of days for patients to be free of phototoxic reactions following phototesting. This was recorded by patients through diaries, however these diaries were not completed appropriately, thus data could not be collected. Thus, the efficacy analysis was performed using the secondary efficacy endpoint, change in quality of life as measured by SF-36.

Subjects visited the clinic on Day 0 (administration of afamelanotide implant and porfimer sodium), Day 2 (photodynamic therapy), and Days 20 and 90 for assessments of adverse events, concomitant medication and the results of evaluation of phototoxicity.

Afamelanotide