It was the experiences of community members who were going through cancer care sparked an interest in oncology for Gundungurra woman community who grew up in Lutruwita (Tasmania)
"This narrowed my interest to neuro-oncology when I started to learn a lot more about cancer care and cancer treatment and became aware of the impact of brain cancer," she told AAP.
Ms Slicer, now in her second year of a Doctor of Medicine degree at the University of NSW is also involved in research on cancers which impact First Nations children and adults.
She said when it comes to brain cancer treatments like surgery, radiation and chemotherapy can impact brain tissue, which in turn can impact a patient's cognitive state, behaviour and brain functioning.
"The understanding of that impact just felt so important to me and how there's not been that great of a progression in further developing treatments and management of these tumours," she said.
"Particularly in the Aboriginal population, the outcomes of brain cancers in both pediatric and adult patients is really quite terrible, really poor outcomes even in comparison to non-Indigenous Australians.
"The amount of progress there is yet to be done in these fields is something that really drove my passion into pursuing this."
Ms Slicer is one of five recipients of the inaugural First Nations Cancer Scholarship, which aims to increase the network of Indigenous people leading and contributing to cancer control.
Ms Slicer said it was an "overwhelming honour" to be awarded the scholarship.
"It really means so much to me," she said.
"As an Aboriginal medical student I know the importance of cultural understanding and respect when it comes to health care, particularly cancer treatment.
"It feels like it's showing the significance of me as an Aboriginal medical student to progress into these healthcare professions and how important that is to improving health outcomes."
Among the other recipients of the scholarship were Brodie Seymour, Kayla Vitale, Khwanruethai Ngampromwongse and Kasarina Mann.
The scholarship is funded through a $5.9 million investment over four years from the federal government through Cancer Australia and administered by Aurora Education Foundation.
Aurora's chief executive Leila Smith, said these scholarships would bring more Indigenous healthcare professionals into the cancer care space.
"I am incredibly proud of our scholars, and look forward to seeing the skills and experience they will bring to the cancer field in the coming years," she said.
Ms Slicer said she is proud to be an Aboriginal medical student, and building up representation of Indigenous people in oncology will help to foster trust between community and health professionals.
"Having First Nations researchers in neuro-oncology and oncology in general is crucial because it allows for deeper understanding of how brains cancers and cancer affect the Indigenous population," she said.
"It enables the development of culturally sensitive treatment approaches and management, which is just super important in addressing the disparities in care, access and outcomes."