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The triphasic response of pituitary stalk injury has previously been described in a minority of patients following intracranial surgery, however, this phenomenon can also occur after traumatic brain injury. We present the case of a 20-year-old male who experienced the triphasic response of pituitary stalk injury (central diabetes insipidus, syndrome of inappropriate antidiuretic hormone and central diabetes insipidus again) after striking his head on a concrete curb. His history and presentation highlight the importance of recognising the distinctive symptoms of each individual stage of pituitary stalk injury, and using the appropriate diagnostic tools and therapies to guide further management.

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Oxidative stress is associated with cancer, including NPC, which is developed by the relation of genetic alteration, EBV infection, and environmental risk. Ile/Val genotype of GSTP1 polymorphism decrease enzyme functions and result in lower total antioxidant status. This study aimed to identify the association of GSTP1 polymorphism and the TAS level. This was a cross-sectional design study. There were 29 NPC patients with their blood as the samples of the study. Blood as the samples for identifying GSTP1 polymorphism by PCR-RFLP-electrophoresis method and measurement of TAS using the ELISA method. There were 21 (72.4%) NPC patients with Ile/Val polymorphism and lower TAS. We found there was no significant association of GSTP1 polymorphism and TAS. Future research with larger samples and adding data about environmental risk such as smoking, alcohol consumption, and toxic substances exposure or multivitamin consumption of the patients can reveal more definitive results. The study may be used as references for determining antioxidant therapy in NPC as well as prevention. The identifying genetic risk factor may help the prevention of NPC.