TGFB1 and Marfan syndrome: Since the histological phenotype in our patient resembles that in Marfan syndrome and Loeys‐Dietz syndrome patients (Maleszewski et al., 2009) and dysregulated transforming growth factor‐β (TGF‐β) signaling is a key feature of these syndromes, we also studied whether phosphorylated SMAD2 (pSMAD2), a downstream marker of TGF‐β activity, is increased here too.