THPO and Thrombocytopenia: We conducted a literature review of the MEDLINE, PubMed, and Cochrane databases using the subject headings ‘Inherited thrombocytopenia’, and the keywords ‘thrombocytopenia’, ‘thrombopoietin receptor agonists’, ‘thrombopoietin mimetics’, ‘romiplostim’, and ‘eltrombopag’ up to 12 February 2021.