She completed a fellowship at the Stanford University School of Medicine, where she was mentored by Philip A. Beachy, and was board certified in neuro-oncology and neurological subspecialities in 2013.

[7] She has extensively investigated Diffuse Intrinsic Pontine Glioma (DIPG), a cancer for which it is difficult to identify effective chemotherapy and impossible to remove surgically, as the tumour grows in the brainstem.

[8] In 2009 she grew the first laboratory cultures of DIPG from deceased donors, which allowed her and her team to monitor the cell's growth and test chemotherapy agents.

Monje is leading a Phase 1 clinical trial of panobinostat, a drug which slows the growth of DIPG and has been shown to increase survival rates in mice.

[10] This work involved screening DIPG tumour cultures for surface molecules that could be targets for CAR-T cells.

[8] The campaigning and research of Monje resulted in the United States renaming May 17 as Paediatric Brain Cancer Awareness Day.