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The identification of large chromosomal rearrangements in cancers has multiplied exponentially over the last decade. These complex and often rare genomic events have traditionally been challenging to study, in part owing to lack of tools that efficiently engineer disease-associated inversions, deletions and translocations in model systems. The emergence and refinement of genome editing technologies, such as CRISPR, have significantly expanded our ability to generate and interrogate chromosomal aberrations to better understand the networks that govern cancer growth. Here we review how existing technologies are employed to faithfully model cancer-associated chromosome rearrangements in the laboratory, with the ultimate goal of developing more accurate pre-clinical models of and therapeutic strategies for cancers driven by these genomic events.

Introduction Melatonine (N-acetyl-5-methoxytryptamine) is an endogenous neurohormone produced by pineal gland. It is related to sleep-wake circadian rhythms, and nowdays it is sold without prescription as a “natural treatment” for sleep disorders. Most common side effects of melatonin overdose are drowsiness, dizziness, fatigue, headache, confusion, nightmare, hypotension, tachycardia and hypothermia. Supportive measures and control of vital signs are essential for an early discharge of the patient. Objectives To present a case of an 42-year-old woman who was taken to the emergency department after voluntary ingestion of 60 tables of melatonin 2mg (Total amount 120mg), in a suicide attempt. To describe the most common side effects of melatonine overdose a the literature review. Methods Clinical case presentation and retrospective literature review. Results A 42-year-old woman who was taken to the emergency department after voluntary ingestion of 60 tables of melatonin 2mg (Total amount 120mg), about 1 hour before coming, in a suicide attempt. After clinical evalutation, gastric lavage was performed. ang 50g activated charcoal given. Drowiness and mild hypothermia (34ºC) was detected. After 12 hours of vital signs observation the patient was discharged and to psychiatry consultation, where depressive mood disorder and chronic insomnia was diagnosed. Conclusions Melatonin is one of the least toxic medication. Most common side effects of overdose are drowsiness, dizziness, fatigue, headache, confusion, nightmare, hypotension, tachycardia and hypothermia. Supportive measures and control of vital signs are essential for the treatment. Disclosure No significant relationships.