Our data did not show a relation between the tumour size and the AQP-1 or perilipin levels as previously reported by Morrissey et al.26 even after normalizing the results to urine creatinine following a protocol similar to the one reported by Morrissey et al. A possible reason being the complication to replicate the experiment realized by Morrissey's group due to discontinued commercial antibodies and use of proprietary antibodies. Here, AQP1 is linked to neoplasm.