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. 2019 Aug 23;138(6):885–900. doi: 10.1007/s00401-019-02061-5

Fig. 5.

Fig. 5

Activation of the mTOR pathway in FCD2/HME cases. pS6 (pS6 Ser240/244) immunostaining on 4 μm-FFPE brain sections in panel-negative (ac) and panel-positive FCD2/HME cases (di). Strong pS6 immunoreactivity in DNs and BCs was detected in all cases, though signals appeared less intense in BCs. Panel-negative representative cases are shown to illustrate: FCD2a in a (FCD-40), FCD2b in b (FCD-68) and HME in c (HME-80). Panel-positive representative cases: FCD2a MTOR:p.Ser2215Phe in d (FCD-24), FCD2b MTOR:p.Thr1977Lys in e (FCD-56), FCD2a DEPDC5:p.Arg239* in f (FCD-35). HME cases with variants in different genes are reported in panels g–i: PIK3CA:p.Glu542Lys in g (HME-75), AKT3:p.Glu17Lys in h (HME-74); RHEB:Tyr35Leu in i (HME-79). Scale bar: 50 µm