Question: TCGA Clinical data
1
gravatar for Zhan
5.2 years ago by
Zhan10
China
Zhan10 wrote:

Hi, I am using the clinical data from TCGA. But there are some clinical informations that I don't understand.Such as "days_to_drug_therapy_start","days_to_drug_therapy_end",
"days_to_surgical_resection","days_to_radiation_therapy_end","days_to_new_tumor_event_additional_surgery_procedure".the values of "days_to_surgical_resection" is -6213. I really need some help.Another question is why some patients have two different "days_to_surgical_resection"? this means these patients had two surgical resection?

tcga clinical data • 5.4k views
ADD COMMENTlink modified 12 months ago by Hanson.D.20 • written 5.2 years ago by Zhan10
4
gravatar for abass.conteh
4.3 years ago by
abass.conteh40
United States
abass.conteh40 wrote:

This might be too late for you. I had the same question and was able to find the descriptions and wanted to post answer just in case someone else searches for this in the future.

https://tcga-data.nci.nih.gov/docs/dictionary/

ADD COMMENTlink modified 3 months ago by RamRS26k • written 4.3 years ago by abass.conteh40

Dictionary has been moved to https://gdc-docs.nci.nih.gov/Data_Dictionary/viewer/

ADD REPLYlink written 3.4 years ago by jonasmst300
2
gravatar for Hanson.D.
12 months ago by
Hanson.D.20
University of Calgary
Hanson.D.20 wrote:

To update the old answers, the data dictionary has once again been moved.

https://docs.gdc.cancer.gov/Data_Dictionary/viewer/

As for the "days_to_drug_therapy_start" and "days_to_drug_therapy_end" columns of the drug annotation file, the little information I could find suggests these to be days from the date of initial pathological diagnosis.

https://docs.gdc.cancer.gov/Data_Dictionary/viewer/#?view=table-definition-view&id=treatment (lists days_to_treatment_start as "Number of days between the date used for index and the date the treatment started"; does not specify what the index date is)

http://docs.cavatica.org/docs/tcga-grch38-metadata#section-treatment (defines "days to treatment" as "The number of days from the date of the initial pathologic diagnosis that treatment began.").

Hope this helps others having to work with TCGA drug and radiotherapy annotation files.

ADD COMMENTlink written 12 months ago by Hanson.D.20
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