Table 1

Xeroderma pigmentosum patients at the National Institutes of Health, 1971–2009

Age at last observation/age at death
Burning phenotype
Complementation group (phenotype)
 A (XP)105563100
 B (XP/CS)10110000
 C (XP)462422288352
 D (XP)23815183010
 D (XP/TTD)73470000
 E (XP)31230000
 G (XP)21111000
 G (XP/CS)11010000
 Variant (XP)74370000
 Unknown* (XP)61551000
Skin cancer?
Type of skin cancer
Neurologic phenotype
 Degeneration present251213214000
 No degeneration703139509362
 Non-XP neuro abnormality105563100
  • * Six patients were tested for complementation groups and did not have A, B, C, D, E, F, G, ERCC1 or variant defects.

  • AA, African Americans; CS, Cockayne syndrome; HW, Hispanic whites; NA, native Americans; NHW, non-Hispanic whites; NMSC, non-melanoma skin cancer; TTD, trichothiodystrophy; XP, xeroderma pigmentosum; XP/CS, xeroderma pigmentosum/Cockayne syndrome complex.