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- W4387361071 abstract "Abstract Disclosure: S.K. Singh: None. KEYWORDS: PAX8, SETD1A, DYSGLYCEMIA INTRODUCTION: Hypothyroidism is associated with dysglycemia linked with insulin resistance and shared common genetic determinants.PAX 8 gene regulates the development of thyroid gland as well as the expression of TG,TPO and NIS genes.It impacts glucose homeostasis by favoring beta-cell survival and through thyroid hormones.Epilepsy in hypothyroid patients can be idiopathic or due to Hashimoto’s Encephalopathy (HE). Thyroid hormones can impact epileptogenesis through mitochondrial dysfunction, oxidative-stress and GABAergic transmission. THE INDEX PATIENT: A 13 year old female(weight and height age 1.5 years below her chronological age by Indian growth chart and a further lag of 18 months and 6 months, respectively by CDC chart)was diagnosed as a case of thyroprivic hypothyroidism with TSH - 100 mIU/L and positive anti-TPO antibody. She was euthyroid on 112 ug/d L-T4.She is on anticonvulsant since 12 years of age for tonic-clonic epilepsy. The MRI of brain showed focal gliosis with few small encephalomalacic streaks in right occipital lobe. On evaluation at 12.5 years of age, her fasting plasma glucose was 80 mg/dl and her HbA1c was 4.8% but 2-h post glucose was 233 mg/dl with another value of 270 mg/dl. Her father has T2DM and Hypothyroidism. Her mother is Hypothyroid. Her genetic study showed SETDIA and PAX8(-) mutations. DISCUSSION: PAX8 regulates development of thyroid gland and biosynthesis of thyroid hormones. It can impact glucose homeostasis by enhancing beta-cell survival by inhibiting apoptosis, immunomodulation, maintaining local anti-inflammatory milieu in pancreas, ensuring systemic levels of thyroid hormone to stimulate insulin secretion and protect beta-cells from environmental stressors.PAX8 mutation in a family has been shown to be associated with a spectrum of disorders encompassing Gestational Thyroid Dysfunction(GTD),Gestational Diabetes Mellitus(GDM) and T2DM.[1] Although mutation analysis was done only in the index patient, Hypothyroidism and Dysglycemia (post- glucose>200 mg/dl)in the patient and family history of Hypothyroidism and T2DM could be linked with PAX8 mutation.SETD1A mutation has been linked with early-onset epilepsy with or without developmental delay. The mutation study can aid in deciding appropriate therapy including steroids for HE. CONCLUSION: This case highlights the significance of evaluation for PAX8 mutation in hypothyroid patients, even if anti-TPO positive, particularly when there is family history of thyroid dysfunction, GDM, T2DM. It also underlies the importance of SETD1A mutation analysis in hypothyroid patients with epilepsy. Presentation: Thursday, June 15, 2023" @default.
- W4387361071 created "2023-10-06" @default.
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- W4387361071 date "2023-10-01" @default.
- W4387361071 modified "2023-10-06" @default.
- W4387361071 title "THU237 A Case Of Primary Hypothyroidism, Dysglycemia And Epilepsy With PAX8 And SETD1A Mutation" @default.
- W4387361071 doi "https://doi.org/10.1210/jendso/bvad114.1486" @default.
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