Expression profiles of BCL-2 family proteins in our thyroid carcinoma cells was already analyzed in a recent study by our group [51]: While expression of BAK was relatively constant as a prerequisite for ABT-737 action, BAX was not expressed in FTC238 and C643 and showed a weak expression in sensitive BHT101 and insensitive 8305 and 8505 cells [51]. Here, BAK1 is linked to thyroid gland carcinoma.