Vaccination plays an important role during the COVID-19 pandemic. Vaccine-induced thrombotic thrombocytopenia (VITT) is a major adverse effect that could be lethal. For cancer patients, cancer-related thromboembolism is another lethal complication. When cancer patients receive their COVID-19 vaccines, the following thromboembolic events will be more complicated. We presented a case recently diagnosed with pancreatic cancer, who had received the mRNA-1273 (Moderna) vaccination 12 days prior. Ischemic stroke and VITT were also diagnosed. We aggressively treated the patient with steroids, immunoglobulin, and plasma exchange. The titer of anti-platelet factor four and d-dimer level decreased, but the patient ultimately died. The complicated condition of VITT superimposed cancer-related thromboembolism was considered. To our knowledge, only one case of mRNA-1273 related VITT was reported, and this case study was the first to report a cancer patient who was diagnosed with VITT after mRNA-1273 vaccination. Therefore, when the need for vaccination among cancer patients increased under the current COVID-19 pandemic, the possible risk of VITT for cancer patients should be carefully managed. Further studies of the risk evaluation of the COVID-19 vaccine in cancer patients might be required in the future.
【저자키워드】 COVID-19, platelet factor 4 (PF4), Pancreatic cancer, vaccine-induced immune thrombotic thrombocytopenia, messenger RNA-1273, 【초록키워드】 COVID-19 vaccine, vaccination, mRNA-1273, knowledge, COVID-19 pandemic, risk, Steroids, COVID-19 vaccines, Immunoglobulin, Ischemic Stroke, Thromboembolism, Cancer patients, plasma, Moderna, cancer patient, adverse effect, thrombotic, Thromboembolic event, died, reported, the patient, diagnosed, required, treated, receive, 【제목키워드】 thrombocytopenia, messenger,