HOTAIR - HOX Transcript Antisense RNA

According to Wikipedia:

HOTAIR (for HOX antisense intergenic RNA) is a human gene located on chromosome 12. It is the first example of an RNA expressed on one chromosome that has been found to influence transcription on another chromosome.

However, Wikipedia itself cites Genecards, which has a slightly different metanym expansion (without any missing letters) for HOTAIR: HOX Transcript Antisense RNA. Either way, a very interesting gene and, though ad hoc intranym, certainly contrived enough for ORCA!

(HOTAIR possibly needs a new ORCA classification because both “metanym” sub-acronyms - HOX (Homeobox) and RNA (Ribonucleic acid) are themselves “itranyms”, as is HOTAIR.)

miRCat - miRNA Categoriser

I am currently writing some lectures on RNA biology and came across the charmingly named miRCat: miRNA Categoriser.

This is a meta-acronym, with miRNA being short for microRNA (often abbreviated further to "miR" and pronounced “meer”, hence the logo) and RNA itself an acronym for Ribonucleic Acid).

miRCat is a tool to identify miRNAs in high-throughput small RNA sequence data… miRCat takes a FASTA file of small RNA reads as input and will map them to a reference genome… The tool then looks at genomic hit distribution patterns and secondary structure of genomic regions corresponding to sRNA hits and will predict miRNAs and their precursor structures.

Given the homophonic aspect of the acronym, I reckon this counts as pre hoc. As far as I am aware, “Categoriser” is not even a real (English) word, so this is definitely acronym contrivance worth of ORCA.