How to designate a sample's subtype based on microarray model without microarray but RNAseq

Question

[agicict]

Hello.

I am studying glioblastoma (GBM) and its four subtypes were established based on microarray data (TCGA 2010).

I have only RNA-seq data without microarray and want to know subtypes of my samples individually.

As far as I know, there is no paper where authors predict GBM's four subtypes based on RNA-seq data.

I would like to know any method or paper which can solve my issue.

Thank you.

[theobroma22]

Maybe you can start with/use principal components analysis?

[theobroma22]

How did the array paper do it?