Does anyone know of any free online pipelines that I can enter a list of genes from mRNA seq data and can get information about disease groups the genes are generally found in?
If you go to https://david.ncifcrf.gov/summary.jsp , you simply copy and paste in the little white box on the left your genes list.
In the step 2, below the white box where you pasted your genes list, select the appropriate gene identifier. However, if you are uncertain about it, at the end of the list you find the option "not sure" and DAVIS will try to guess what kind of input data you have.
In the step 3 select "Gene list" and go ahead.
Among all the results got, as first one you get "disease". Clicking on the + symbol, you can choose the database that shows the highest coverage according to your input data.
Generally speaking, you can collect a bunch of expression data of your genes of interest from both the ENSEMBL and the UCSC browsers. You can also check on GEPIA2 (http://gepia2.cancer-pku.cn/#index) since they have cancer data that might be interesting for you (expression, survival, etc).