FOLH1 and pachyonychia congenita: In PC patients, Jalali and coworkers [22] found a strong and significant correlation between [18F]-FDHT uptake in lesions (SUVmax/SUVbackground) and the AR optical density measured on tumor samples (r = 0.72), while 68Ga-PSMA-11, although demonstrating a correlation with PSMA expression in tissues, did not reach the threshold of statistical significance.