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Found 5 results

  1. The oral chemotherapy temozolomide might be an effective treatment for Cushing’s disease caused by aggressive tumors in the pituitary gland that continue to grow after surgery and taking other medications, a case report suggests. The study, “Successful reduction of ACTH secretion in a case of intractable Cushing’s disease with pituitary Crooke’s cell adenoma by combined modality therapy including temozolomide,” was published in the journal J-Stage. Cushing’s disease is often caused by a tumor in the pituitary gland that secretes high levels of adrenocorticotropic hormone (ACTH), leading to high levels of cortisol and other symptoms. Macroadenomas are aggressive, fast-growing tumors that reach sizes larger than 10 millimeters. Crooke’s cell adenoma is a type of macroadenoma that does not respond to conventional therapies, but has deficient mechanisms of DNA repair. That is why chemotherapeutic agents that damage the DNA, such as temozolomide, might be potential treatments. Researchers in Japan reported the case of a 56-year-old woman with Cushing’s disease caused by a Crooke’s cell adenoma in the pituitary gland who responded positively to temozolomide. The patient was diagnosed with Cushing’s disease at age 39 when she went to the hospital complaining of continuous weight gain. She also had excessive production of urine and a loss of vision in the right eye. The lab tests showed high levels of cortisol and ACTH, and the MRI detected a tumor of 4.5 centimeters in the pituitary gland. The doctors removed a part of the tumor surgically, which initially reduced the levels of ACTH and cortisol. However, the hormone levels and the size of the residual tumor started to increase gradually after the surgery, despite treatment with several medications. By the time the patient was 56 years old, she went to the hospital complaining of general fatigue, leg edema (swelling from fluid), high blood pressure, and central obesity (belly fat). Further examination showed a 5.7 cm tumor, identified as a Crooke’s cell macroadenoma. The patient underwent a second surgery to remove as much tumor as possible, but the levels of ACTH remained high. She took temozolomide for nine months, which normalized the levels of ACTH and cortisol. After the treatment, the patient no longer had high blood pressure or leg edema. The tumor shrunk considerably in the year following temozolomide treatment. The patient started radiation therapy to control tumor growth. The levels of cortisol and ACHT remained normal, and the tumor did not grow in the seven years following temozolomide treatment. “These clinical findings suggest that [temozolomide] treatment to patients with Crooke’s cell adenoma accompanied with elevated ACTH may be a good indication to induce lowering ACTH levels and tumor shrinkage,” researchers wrote. Other cases of Cushing’s disease caused by aggressive macroadenomas showed positive results, such as reduction of tumor size and decrease in plasma ACTH, after temozolomide treatment. However, more studies are needed to establish the ideal course of chemotherapy to treat these tumors, the researchers noted. From https://cushingsdiseasenews.com/2019/06/18/temozolomide-effective-cushings-disease-aggressive-tumors-case-report/
  2. Adrenocorticotropic hormone (ACTH)-independent Cushing's syndrome (CS) is mostly due to unilateral tumors, with bilateral tumors rarely reported. Its common causes include primary pigmented nodular adrenocortical disease, ACTH-independent macronodular adrenal hyperplasia, and bilateral adrenocortical adenomas (BAAs) or carcinomas. BAAs causing ACTH-independent CS are rare; up to now, fewer than 40 BAA cases have been reported. The accurate diagnosis and evaluation of BAAs are critical for determining optimal treatment options. Adrenal vein sampling (AVS) is a good way to diagnose ACTH-independent CS. A 31-year-old woman had a typical appearance of CS. The oral glucose tolerance test showed impaired glucose tolerance and obviously increased insulin and C-peptide levels. Her baseline serum cortisol and urine free cortisol were elevated and did not show either a circadian rhythm or suppression with dexamethasone administration. The peripheral 1-deamino-8-D-arginine-vasopressin (DDVAP) stimulation test showed a delay of the peak level, which was 1.05 times as high as the baseline level. Bilateral AVS results suggested the possibility of BAAs. Abdominal computed tomography showed bilateral adrenal adenomas with atrophic adrenal glands (right: 3.1 cm × 2.0 cm × 1.9 cm; left: 2.2 cm × 1.9 cm × 2.1 cm). Magnetic resonance imaging of the pituitary gland demonstrated normal findings. A left adenomectomy by retroperitoneoscopy was performed first, followed by resection of the right-side adrenal mass 3 mo later. Biopsy results of both adenomas showed cortical tumors. Evaluations of ACTH and cortisol showed a significant decrease after left adenomectomy but could still not be suppressed, and the circadian rhythm was absent. Following bilateral adenomectomy, this patient has been administered with prednisone until now, all of her symptoms were alleviated, and she had normal blood pressure without edema in either of her lower extremities. BAAs causing ACTH-independent CS are rare. AVS is of great significance for obtaining information on the functional state of BAAs before surgery. World journal of clinical cases. 2019 Apr 26 [Epub] Yu-Lin Gu, Wei-Jun Gu, Jing-Tao Dou, Zhao-Hui Lv, Jie Li, Sai-Chun Zhang, Guo-Qing Yang, Qing-Hua Guo, Jian-Ming Ba, Li Zang, Nan Jin, Jin Du, Yu Pei, Yi-Ming Mu Department of Endocrinology, Chinese People's Liberation Army General Hospital, Beijing 100853, China., Department of Endocrinology, Chinese People's Liberation Army General Hospital, Beijing 100853, China. guweijun301@163.com., Department of Pathology, Chinese People's Liberation Army General Hospital, Beijing 100853, China. PubMed http://www.ncbi.nlm.nih.gov/pubmed/31119141 From https://www.urotoday.com/recent-abstracts/urologic-oncology/adrenal-diseases/112782-bilateral-adrenocortical-adenomas-causing-adrenocorticotropic-hormone-independent-cushing-s-syndrome-a-case-report-and-review-of-the-literature.html
  3. Huang X, et al. Pituitary. 2019;doi:10.1007/s11102-018-0927-x. March 3, 2019 The use of 3D-printed models could lead to less operation time and blood loss and fewer postoperative complications in adults who undergo endoscopic endonasal transsphenoidal surgery for pituitary adenomas and other conditions, according to findings published in Pituitary. “Several factors influence the outcome of endoscopic endonasal surgery, including the tumor volume, patient age, lesion location and sphenoid pneumatolysis,” Xiaobing Jiang, of the department of neurosurgery at Union Hospital of Tongji Medical College of Huazhong University of Science and Technology in Wuhan, Hubei, China, and colleagues wrote. “An accurate model of the target tumor structure is a major prerequisite for a successful [pituitary adenoma] resection, especially for macroadenomas, as this may avoid disastrous complications due to suboptimal treatment.” Jiang and colleagues conducted a retrospective analysis of 20 adults who underwent endoscopic endonasal transsphenoidal surgery at Union Hospital in Wuhan. Participants were included based on similar tumor sizes, the presence of no other diseases and nonintuitive tumor identification. All surgeries in the cohort occurred between January and August 2017, with 10 participants (mean age, 44.4 years; 50% women) receiving CT and MRI before surgery; the remaining 10 also received an operation with 3D printing (mean age, 41.2 years; 50% women). To create the 3D models, images from CT and MRIs were combined. The 3D printer then used this information to create the model, which took between 2 hours, 10 minutes, and 4 hours, 32 minutes, to design and 10 hours, 12 minutes, and 22 hours, 34 minutes, to print. After surgery, the researchers found that mean operation time was lower in participants who had 3D models compared with participants who did not (127 minutes vs. 143.4 minutes; P = .007). In addition, there was less blood loss in participants with 3D printing compared with participants without (159.9 mL vs. 170 mL; P = .009). The researchers noted that there were postoperative complications in 20% of the 3D-printing group and 40% of the CT and MRI alone group. “As it is highly precise and allows personalization, 3D-printing technology has started to be applied in medicine in recent years. In neurosurgery, 3D-printing technology can provide models for the patients’ disease characteristics, such as skull defects, brain tumors, intracranial aneurysms and intracranial vascular malformations,” the researchers wrote. “We believe that with its continuous development, 3D-printing technology will be applied in clinical practice in the near future.” – by Phil Neuffer Disclosures: The authors report no relevant financial disclosures. From https://www.healio.com/endocrinology/neuroendocrinology/news/online/%7B582c6512-708a-4900-ad20-f0adb5a79390%7D/3d-printing-technology-improves-outcomes-in-pituitary-adenoma-surgery
  4. TOKYO and LONDON, Feb. 20, 2019 /PRNewswire/ -- Sosei Group Corporation ("the Company"; TSE: 4565), announces that the first healthy subject has been dosed with a novel small molecule HTL0030310 in a Phase I clinical study, marking the start of a new in-house clinical program targeting endocrine disorders, including Cushing's disease. HTL0030310 is a potent and selective agonist of the SSTR5 (somatostatin 5) receptor and the sixth molecule designed by the Company using its GPCR Structure-Based Drug Design (SBDD) platform to enter clinical development. HTL0030310 has been designed to modulate the excess release of hormones from adenomas (benign tumors) of the pituitary gland. Highly elevated plasma levels of pituitary hormones result in a number of serious endocrine disorders, including Cushing's Disease. Cushing's disease is characterized by excessive cortisol release, crucial in regulating metabolism, maintaining cardiovascular function and helping the body respond to stress. A key design feature of HTL0030310 is its significant selectivity for SSTR5 over SSTR2. This selectivity is expected to improve the balance of efficacy vs. dose-limiting side effects and therefore, presents an opportunity to develop a best-in-class medicine for patients with Cushing's disease, in particular. The clinical trial with HTL0030310 is a double-blind, randomised, placebo-controlled first-in-human study in which single ascending subcutaneous doses of HTL0030310 will be administered to healthy male and female adult subjects. The study is being conducted in the UK and will assess the safety, tolerability, pharmacokinetics and pharmacodynamics of HTL0030310 in up to 64 subjects. Preliminary results are expected in the second half of 2019 and will provide a first insight into the effects of HTL0030310 on the control of glucose and other endocrine hormones and the potential to target Cushing's disease and other endocrine disorders. Dr. Malcolm Weir, Executive VP and Chief R&D Officer, said: "HTL0030310 is a novel and highly selective molecule, and is the sixth candidate originating from our SBDD platform to advance into human trials. We are not only pleased to begin this new study but also delighted with the productivity of our unique platform to generate attractive candidates targeting GPCRs involved in multiple diseases. These candidates present new prospects for our emerging proprietary pipeline, as well as unique opportunities for partnering, and provide a solid foundation to execute our strategy." About Cushing's disease Cushing's disease is a debilitating endocrine disorder caused by the overproduction of the hormone cortisol and is often triggered by a pituitary adenoma (benign tumour) secreting excess adrenocorticotropic hormone (ACTH). Cortisol has a crucial role regulating metabolism, maintaining cardiovascular function and helping the body respond to stress. Symptoms may include weight gain, central obesity, a round, red full face, severe fatigue and weakness, striae (purple stretch marks), high blood pressure, depression and anxiety. Cushing's disease affects 10-15 million people per year, most commonly adults between 20 to 50 years and women more often than men. The first line and most common treatment approach for Cushing's disease is surgical removal of the pituitary tumor followed by radiotherapy and drug therapy designed to reduce cortisol production. Ref: American Association of Neurological Surgeons (AANS) About Sosei Heptares We are an international biopharmaceutical group focused on the design and development of new medicines originating from its proprietary GPCR-targeted StaR® technology and structure-based drug design platform capabilities. The Company is advancing a broad and deep pipeline of partnered and wholly owned product candidates in multiple therapeutic areas, including CNS, immuno-oncology, gastroenterology, inflammation and other rare/specialty indications. Its leading clinical programs include partnered candidates aimed at the symptomatic treatment of Alzheimer's disease (with Allergan) and next generation immuno-oncology approaches to treat cancer (with AstraZeneca). Our additional partners and collaborators include Novartis, Pfizer, Daiichi-Sankyo, PeptiDream, Kymab and MorphoSys. The Company is headquartered in Tokyo, Japan with R&D facilities in Cambridge, UK and Zurich, Switzerland. "Sosei Heptares" is the corporate brand of Sosei Group Corporation, which is listed on the Tokyo Stock Exchange (ticker: 4565). For more information, please visit https://www.soseiheptares.com/ LinkedIn: @soseiheptaresco | Twitter: @soseiheptaresco | YouTube: @soseiheptaresco Forward-looking statements This press release contains forward-looking statements, including statements about the discovery, development and commercialization of products. Various risks may cause Sosei Group Corporation's actual results to differ materially from those expressed or implied by the forward-looking statements, including: adverse results in clinical development programs; failure to obtain patent protection for inventions; commercial limitations imposed by patents owned or controlled by third parties; dependence upon strategic alliance partners to develop and commercialize products and services; difficulties or delays in obtaining regulatory approvals to market products and services resulting from development efforts; the requirement for substantial funding to conduct research and development and to expand commercialization activities; and product initiatives by competitors. As a result of these factors, prospective investors are cautioned not to rely on any forward-looking statements. We disclaim any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise. View original content:https://www.prnewswire.com/news-releases/sosei-heptares-starts-new-clinical-development-program-300798591.html SOURCE Sosei Heptares
  5. The surgical removal of two-thirds of the pituitary gland is associated with high initial remission rates and low operative morbidity in patients with suspected Cushing’s disease, when no tumor is found on the gland during surgical exploration. Cushing’s disease (CD) is caused by increased levels of glucocoticosteroids, such as adrenocorticotropic hormone (ACTH), circulating in the blood. In nearly 70 percent of cases this happens as a result of benign tumors on the pituitary gland, which produce excess ACTH. In these patients, the most effective and first-line treatment is surgical removal of the pituitary gland tumor. During the diagnostic stage, clinicians use several methods to identify and localize the source of excessive ACTH. But these methods can fail, and the presence of a tumor in the pituitary is not always confirmed. If the tumor remains unidentified during surgical exploration, it falls to the surgeon’s discretion about how to manage their patients. Researchers at the University of Colorado Denver School of Medicine provided an overview of their experience on the management of patients with presumed Cushing’s disease who underwent surgical treatment. The study, “Negative surgical exploration in patients with Cushing’s disease: benefit of two-thirds gland resection on remission rate and a review of the literature,” was published in the Journal of Neurosurgery. “The diagnosis and treatment of CD is one of the most challenging entities that pituitary neurosurgeons, endocrinologists, and pathologists face,” the researchers wrote. “The ability to make a correct diagnosis and deliver a high likelihood of remission after surgery relies heavily on the performance of a meticulous workup and rational surgical strategy.” The team retrospectively analyzed all cases that had been referred to the Department of Neurosurgery of CU School of Medicine between 1989 and 2011 for a potential ACTH-secreting pituitary tumor. During this period, 161 cases of Cushing’s patients who underwent surgical tumor resection were reported. In 22 patients, the surgeon was unable to detect a tumor. In these cases the surgical team decided to remove two-thirds of the gland, with resection of the lateral and inferior portions of the pituitary. All 22 patients were treated using a consistent technique performed by a single surgeon. Posterior tissue analysis confirmed that six of these patients had pituitary ACTH-secreting tumors. In the remaining 16 patients, no tumor was identified. In three patients the team believed that overproduction of ACTH could be due to an overgrowth of ACTH-secreting cells rather than expansion. The team believes that these findings underscore the difficulty of accurately diagnosing very small pituitary tumors pre- and post-operatively. The 22 patients were followed for a mean time of 98.9 months, or 8.2 years. No remissions were observed in the six patients who had ACTH-secreting tumors or in 12 of the remaining patients. Blood analysis in follow-up exams confirmed these patients had normal levels of glucocoticosteroids. Four patients continued to show persistent elevated amounts of ACTH. Additional clinical evaluations revealed that two patients had ACTH-secreting lung tumors, and one patient was suspected of having an ACTH-secreting tumor on a brain region close to the pituitary. There was one case where the clinical team was unable to identify the origin of elevated ACTH. Only three patients required hormone replacement after the two-thirds gland removal to overcome a newly detected hormone deficit. The approach used by the surgical team was, overall, found to be safe with no severe side effects reported. “Currently, when the neurosurgeon is faced with the inability to identify a discrete adenoma intraoperatively, there is little uniformity in the literature as to how to proceed,” the team wrote. “We believe this [pituitary resection] approach will be useful to help guide surgeons in the operative treatment of this particularly difficult group of patients.” From https://cushingsdiseasenews.com/2017/12/14/pituitary-gland-resection-may-help-presumed-cushings-disease-patients/
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