AT/RT
Also written as: AT/RT — Atypical Teratoid/Rhabdoid Tumour
Abbreviation for atypical teratoid/rhabdoid tumour, an aggressive paediatric CNS malignancy defined by SMARCB1/INI1 loss.
Full Definition
AT/RT is the standard abbreviation for atypical teratoid/rhabdoid tumour and is widely used in paediatric neuropathology, neuro-oncology, and clinical trial documentation. The solidus within the abbreviation mirrors the solidus in the full name and must be preserved. Editors must not reformat 'AT/RT' as 'ATRT' or 'AT-RT', as neither variant is accepted in current WHO nomenclature. The abbreviation should be defined at first use in continuous text.
Usage
Usage note: Do not reformat as 'ATRT' or 'AT-RT'. The solidus is mandatory in both the full form and the abbreviation.
In Context
- "The clinical trial enrolled 12 paediatric patients with AT/RT across five participating centres." — Clinical trial report
- "Editors should confirm the solidus is preserved in 'AT/RT'; 'ATRT' without the slash is a formatting error." — Manuscript style check