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[Consequences of clinical genetic analysis of RET proto-oncogene]
1Kliniki Chirurgii Onkologicznej, Centrum Onkologii-Instytut im. M. Skłodowskiej-Curie, Oddział w Gliwicach.
Abstract:
Preliminary results of treatment of inherited medullary thyroid carcinoma, diagnosed primarily with genetic analysis of mutation of protooncogene RET are presented. Among 16 carriers of mutation identical with mutation diagnosed earlier in proband, there were 4 patients with clinically obvious medullary thyroid carcinoma and 12 asymptomatic carriers. In all patients, in whom calcitonin level was increased preoperatively, its normalization was obtained. The paper summarizes these aspects of cooperation between geneticians and physicians in which diagnostic results influence clinical decisions (indication and time of thyroid and lymph nodes surgery and it's spectrum, range of diagnostic procedures towards pheochromocytoma and parathyroid hyperplasia in relation to the found mutation).
Insights
Genetic analysis identifies RET protooncogene mutations in hereditary medullary thyroid carcinoma. Early detection in asymptomatic carriers allows timely intervention, normalizing calcitonin levels and guiding surgical decisions.
Area of Science:
- Oncology
- Genetics
- Endocrinology
Background:
- Hereditary medullary thyroid carcinoma (MTC) is often linked to RET protooncogene mutations.
- Early diagnosis is crucial for effective management and improved patient outcomes.
- Genetic screening plays a vital role in identifying at-risk individuals.
Purpose of the Study:
- To present preliminary findings on the treatment of inherited medullary thyroid carcinoma.
- To highlight the impact of genetic analysis in diagnosing MTC.
- To demonstrate how genetic results influence clinical decisions regarding surgery and further diagnostics.
Main Methods:
- Genetic analysis to detect RET protooncogene mutations.
- Clinical evaluation of patients identified as mutation carriers.
- Preoperative and postoperative monitoring of calcitonin levels.
- Correlation of genetic findings with clinical presentation and surgical management.
Main Results:
- Out of 16 identified RET mutation carriers, 4 had clinically evident MTC and 12 were asymptomatic.
- Normalization of elevated preoperative calcitonin levels was achieved in all treated patients.
- Genetic findings guided decisions on the extent and timing of thyroid and lymph node surgery.
- Diagnostic procedures for pheochromocytoma and parathyroid hyperplasia were tailored based on mutation type.
Conclusions:
- Genetic screening for RET mutations is effective in identifying individuals with hereditary MTC.
- Early detection and intervention in asymptomatic carriers can lead to successful treatment outcomes.
- Multidisciplinary collaboration between geneticists and clinicians is essential for optimal MTC management.