Received: 16 August 2021
Accepted: 29 November 2021
First Online: 14 December 2021
: Institutional Review Board of King Faisal Specialist Hospital and Research Centre provided approval for the collection of archival samples. For this study, since only archived paraffin tissue blocks and retrospective patient data were used, a waiver of consent was obtained from Research Advisory Council (RAC) under project RAC# 2140 008. This study was performed in accordance with the Declaration of Helsinki.
: Not applicable.
: The authors declare that they have no competing interests.