(D) Lysates from U20S or tetracycline-inducible VCP-WT, -RH, or -AE cells treated with vehicle or Baf for 4 h and immunoblotted for LC3 and α-tubulin. Note that Baf treatment does not increase the LC3II levels in IBMPFD mutant (RH and AE)-expressing cells. Bars, 15 µm. 