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Function: insertAPISummary
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Filename: controllers/Detail.php
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Background: A retrospective study using PET/CT imaging with 124I-labeled metaiodobenzylguanidine (124I-MIBG) was performed to estimate the (radiation) absorbed dose to the salivary glands in neuroendocrine cancer patients undergoing 131I-MIBG therapy and to compare these results with those in radioiodine (131I-iodide) therapy.
Methods: Twenty-seven patients received individual 124I-MIBG-PET/CT dosimetries, among whom 18 had not previously undergone any MIBG therapies (patient group before treatment) and 9 had already received MIBG therapies prior to the tracer dosimetries (patient group after treatment). For each patient, three or four 124I-MIBG PET/CT scans were performed at approximately 4 and 24 hours, as well as at approximately 48 or/and ≥96 hours after tracer injection. The absorbed doses per administered 131I-MIBG activity to the submandibular and parotid glands were calculated based on the MIRD concept, with its assumption of a uniform glandular activity distribution.
Results: The mean±standard deviation of the (self-)absorbed dose per activity averaged over both patient groups and salivary gland types was 0.53±0.24 Gy/GBq (median, 0.49 Gy/GBq; range, 0.17-1.38 Gy/GBq). The absorbed doses per activity of the patient group before treatment did not significantly deviate from those of the patient group after treatment (P=0.67). In the patient group after treatment, the mean±standard deviation of the cumulative 131I-MIBG activity was 20±12 GBq (median, 16 GBq; range, 10-50 GBq). Among the patient groups, no significant absorbed dose difference was found between the submandibular and parotid glands (P>0.24). In comparison to radioiodine therapy, the estimated absorbed dose per activity in MIBG was significantly higher (P<0.001), on average twice as high, contradicting the relationship between the absorbed dose and clinical observation of glandular side effects.
Conclusions: The discrepant salivary gland responses in MIBG and radioiodine therapies suggest a different radiotherapeutical distribution on microscopic scale within the glandular tissue and prove the clinical relevance of a microdosimetric analysis.
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http://dx.doi.org/10.23736/S1824-4785.17.02760-1 | DOI Listing |
Oncologist
December 2024
The Kinghorn Cancer Centre, St Vincent's Hospital, Sydney, NSW 2010, Australia.
Background: TRK-inhibitors have demonstrated efficacy across several cancers with NTRK fusions. Their activity in cancers with NTRK overexpression remains unclear.
Methods: This trial enrolled patients with advanced cancers harboring NTRK fusions or extreme mRNA overexpression, defined as NTRK1/2/3 expression by RNA profiling >5 SDs for a given cancer type.
Mol Genet Genomics
December 2024
ENT Institute and Department of Otorhinolaryngology, Eye & ENT Hospital, Fudan University, 83 Fen Yang Road, Shanghai, 200031, China.
Low-frequency non-syndromic hearing loss (LFNSHL) is a rare auditory disorder affecting frequencies ≤ 2000 Hz. To elucidate its genetic basis, we conducted whole-exome sequencing on nine Chinese families (31 affected individuals) with LFNSHL. Four heterozygous pathogenic variants, including two novel variants, were identified in common LFNSHL-related genes (WFS1, DIAPH1) and less common genes (TNC, EYA4), achieving a 44% genetic diagnosis rate.
View Article and Find Full Text PDFArch Gynecol Obstet
December 2024
Faculty of Medicine, University of Belgrade, 8 Dr Subotića Street, 11000, Belgrade, Serbia.
Purpose: We aimed to evaluate if ovarian stimulation with individualized dosing of recombinant follicle-stimulating hormone (rec-FSH) with follitropin delta compared with standard gonadotropin dosing reduce occurrence of follicular asynchrony in women with polycystic ovary syndrome (PCOS) undergoing in vitro fertilization (IVF).
Methods: Matched case-control study analyzed occurrence of follicular growth asynchrony during ovarian stimulation and IVF outcomes in women with PCOS. Follicular growth was considered to be asynchronous when one or two leading follicles were at least 4 mm larger in diameter than the rest of the cohort on day 5 and 9 of stimulation.
Breast Cancer Res Treat
December 2024
Division of Medical Oncology and Hematology, Princess Margaret Cancer Centre University Health Network, 700 University Ave, Toronto, ON, M5G 1Z5, Canada.
Purpose: In early-stage breast cancer, steatotic liver disease (SLD) is associated with increased recurrence, cardiovascular events, and non-cancer death. Endocrine therapy (ET) increases the risk of SLD. The impact of cyclin-dependent kinases 4/6 inhibitors (CDK4/6i) on SLD and prognostic association in metastatic breast cancer is unknown.
View Article and Find Full Text PDFDiscov Oncol
December 2024
Department of Gastroenterology, Qingdao Chengyang People's Hospital, Qingdao, China.
Gastric cancer (GC) remains a prevalent and aggressive malignancy with a poor prognosis. This study aimed to identify diagnostic and prognostic biomarkers while exploring their potential functions in GC. A total of 598 upregulated and 506 downregulated genes were identified in GC patients.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!