Cancer

Oncotarget | Prognostic Markers in Adrenocortical Carcinoma
Oncotarget | Prognostic Markers in Adrenocortical Carcinoma administrator 2 Views • 2 years ago

Oncotarget published this trending research paper on September 8, 2020, entitled, "GATA3 and APOBEC3B are prognostic markers in adrenocortical carcinoma and APOBEC3B is directly transcriptionally regulated by GATA3" by researchers from the Thoracic Surgery Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD; The Department of Surgery and Stanford Cancer Institute, Stanford University, Stanford, CA; Department of Surgery, Medical College of Wisconsin, Milwaukee, WI; Office of Science and Technology Resources, Frederick National Laboratory for Cancer Research, National Institutes of Health, Bethesda, MD; Salubris Biotherapeutics, Gaithersburg, MD.

DOI -
https://doi.org/10.18632/oncotarget.27703

Correspondence to - Electron Kebebew - kebebew@stanford.edu

Abstract:
Recent evidence has implicated APOBEC3B (Apolipoprotein B mRNA editing enzyme catalytic subunit 3B) as a source of mutations in breast, bladder, cervical, lung, head, and neck cancers. However, the role of APOBEC3B in adrenocortical carcinoma (ACC) and the mechanisms through which its expression is regulated in cancer are not fully understood. Here, we report that APOBEC3B is overexpressed in ACC and it regulates cell proliferation by inducing S phase arrest. We show high APOBEC3B expression is associated with a higher copy number gain/loss at chromosome 4 and 8 and TP53 mutation rate in ACC. GATA3 was identified as a positive regulator of APOBEC3B expression and directly binds the APOBEC3B promoter region. Both GATA3 and APOBEC3B expression levels were associated with patient survival. Our study provides novel insights into the function and regulation of APOBEC3B expression in addition to its known mutagenic ability.

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Press release - https://www.oncotarget.com/new....s/pr/gata3-and-apobe

Keywords - adrenocortical carcinoma, APOBEC3B, GATA3, prognosis, DNA damage

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How to recognise signs of adrenal gland benign tumor? - Dr. Anantharaman Ramakrishnan
How to recognise signs of adrenal gland benign tumor? - Dr. Anantharaman Ramakrishnan administrator 2 Views • 2 years ago

Adrenal glands tumours tend to be very small, especially the benign ones the malignant ones tend to be large, that is how we differentiate between benign and malignant tumours so typically a tumor more than 5 or 6 cms in size has to be considered malignant unless otherwise proven, so we need to excise the tumour. But smaller size tumours can be left alone and very often these benign adrenal tumours are recognized incidentally. So when you go for a scan for some other reason, that is unrelated to the Adrenal gland, you may find out on an ultrasound or a CT scan that there is a small tumor. So this is called as an incidnetalomas. So typically a benign adrenal tumours are asymptomatic, that is what you have to keep in mind, whatever symptom you may get may not be related to the adrenal gland tumour itself. You need to see if your adrenal gland tumour is giving you any trouble, you need to look at your blood pressure and if it is easy to control the blood pressure because blood pressure can be elevated even without adrenal gland tumour. Most people who have high blood pressure do not have adrenal gland tumour. But is your blood pressure difficult to control. If it this is difficult to control with multiple drugs then the tumor could be responsible for your blood pressure and we need to look at this carefully. Do you have features of Cushing’s syndrome? Cushing’s syndrome can be diagnosed easily by your endocrinologist by just looking at you. So if there is a good index of suspicion, we do a test called as the screening test. The usual screening test that we do is a 24 hour collection for cortisol or we do an overnight dexamethasone suppression test, by these tests we come to know whether you have cortisol excess. If you have cortisol excess, you will have all the symptoms of Cushing’s syndrome like rounding of face outing on weight in the belly, having stretch marks in your skin, thinning out of skin, weak bones fractures, all these can be features of adrenal tumors which are benign. But if any adrenal tumors are producing symptoms, they need to be removed. If any adrenal tumor is producing symptom unrelated to it, then probably removing it may to help it. So typically the link between the symptom and the adrenal tumour is a difficult one to make. It is best left to a specialist. It is best to visit an endocrinologist if you have a benign adrenal tumour that has been discovered.

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