Low enrollment numbers precluded completion of the study during a reasonable amount of time.

To test the ability of palifermin (a recombinant human keratinocyte growth factor) to decrease mucocutaneous injury and to promote epithelial repair in Toxic Epidermal Necrolysis and Stevens-Johnson Syndrome-Toxic Epidermal Necrolysis Overlap, diseases in which there is extensive sloughing of the skin and mucosa, including that of the eyes, gastrointestinal tract, respiratory and genitourinary systems.

Inclusion Criteria:

• Skin biopsy in early disease showing apoptotic keratinocytes in the epidermis and in more advanced disease necrosis of the entire epidermis
• Epidermal detachment or erythematous to purpuric macules involving more than 10% of body surface area in addition to involvement of the oropharynx; there may be further involvement of other mucosal surfaces, ie. conjunctivae, gastrointestinal tract, respiratory and genitourinary epithelia
• Age of 18 years old or older
• The patient is expected to survive longer than 48 hours

Exclusion Criteria:

• Skin detachment above 90% of the body surface area
• Skin detachment has not progressed during the previous 48 hours
• A positive serum pregnancy test
• Age < 18 years old
• Known hematologic or solid organ malignancy

73-year-old male.