question about definition of overall survival

Skip to first unread message

Patricia Scott

Jul 11, 2021, 2:55:35 PMJul 11
to cBioPortal for Cancer Genomics Discussion Group, Anna Prizment
We are using cBioPortal data from the CoadRead  data set to analyze overall survival.

We would like to know what is the start point for time of overall survival- is it time of diagnosis or time of first treatment or some other time point.

We had assumed that the start point was time of diagnosis but then we noticed that a number of cases had a followup time of "0" and 3 of these cases are patients who died.

We would especially like to know what is meant by a followup time of '0" for a patient who has died. Does this represent someone whose colorectal cancer was diagnosed at autopsy?

Thank you for your help!
Pat Scott


Patricia Scott
Assistant Professor
Department of Biomedical Sciences
University of Minnesota Medical School Duluth

Tel: 218-726-8361

Anna Prizment

Jul 12, 2021, 9:12:11 AMJul 12
to Patricia Scott, cBioPortal for Cancer Genomics Discussion Group
Thank you for this email,


Ino de Bruijn

Jul 29, 2021, 11:53:13 AMJul 29
to Anna Prizment, Patricia Scott, cBioPortal for Cancer Genomics Discussion Group
Hi Patirica and Anna,

Apologies for the delay in replying. Could you clarify which study you are referring to?

If you can share a URL where you saw this "0" follow up time I can help figure out the associated article

Best wishes,

You received this message because you are subscribed to the Google Groups "cBioPortal for Cancer Genomics Discussion Group" group.
To unsubscribe from this group and stop receiving emails from it, send an email to
To view this discussion on the web visit
Reply all
Reply to author
0 new messages