This multi-center, observational study involves reviewing the medical records of approximately 100 adult participants diagnosed with advanced BCC from 01 January 2005 until 31 December 2010. Participant records will be analyzed to identify participant characteristics, treatment patterns and clinical outcomes.

Inclusion Criteria:

• New diagnosis of advanced BCC, defined as (1) locally advanced BCC (inoperable as determined by the site investigator or surgery contraindicated) with receipt of radiation therapy (unless radiation was contraindicated), or (2) metastatic BCC, from 01 January 2005 through 31 December 2010

Exclusion Criteria:

• Participation in an interventional trial that dictated treatment during the study time period (01 January 2005 - 31 December 2010), or within 90 days prior to individual participant' study enrolment dates
• Participants undergoing treatment with a Hedgehog pathway inhibitor

Participants with locally advanced or metastatic BCC