Study	Reason for exclusion
Amadori 2013	Published tables indicate that the study tested for ER and HER2 status, but mTNBC specific results were not published. Requests for mTNBC specific results were declined by the study sponsor Eli Lilly.
Crump 2008	Included 38% participants with locoregional disease. Attempts to contact authors were unsuccessful.
Fountzilas 2004	Published tables indicate that the study tested for ER, PgR and HER2 status, but mTNBC specific results were not published. Attempts to contact the trial investigators requesting mTNBC specific results were unsuccessful.
Fountzilas 2009	Published tables indicate that the study tested for TNBC status and there were 56 mTNBC patients. However, comparisons of treatment groups for the mTNBC subgroup were not published. Attempts to contact the trial investigators requesting mTNBC specific results were unsuccessful.
NCT00201760	Enrolled only 10 patients who were unselected for mTNBC and did not report mTNBC specific results
Somlo 2015	Participants not randomised.
Wang 2008	> 20% participants with locally advanced disease only. Data were not reported separately.
Xu 2011	Published tables indicate that the study tested for ER and HER2 status, but mTNBC specific results were not published. Attempts to contact the trial investigators requesting mTNBC specific results were unsuccessful.