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Concomitance of numerical chromosomal alterations with structural in an elderly with Alzheimer’s disease: a case report

AIMS: To report the first case the concomitance of numerical chromosomal abnormalities with structural as well as chromosomal abnormalities structural in a patient diagnosed with Alzheimer disease in Manaus/Amazonas. CASE DESCRIPTION: A male patient with 76 years of age was diagnosed with diagnosis of cognitive disorder- Alzheimer’s disease with late onset - temporal variant after laboratory, physical and imaging exams. Cytogenetic analysis was requested for this patient, revealing the presence the concomitant of numerical and structural chromosomal abnormalities with metaphase cells composed of 45 chromosomes with the loss of one of the homologues of chromosome 21 (monosomy) and a deletion of the long arm of one of the homologues of chromosome 1 [45, XY, -21, del (1) (q?)] and metaphase cells containing 46 chromosomes with a deletion of the long arm of one of the homologues of chromosome 15 [(46, XY, del (15) (q?)]. Currently, the patient is in outpatient treatment for maintenance and control of the disease. CONCLUSIONS: Our study has underlined that karyotyping is one of the fundamental investigations for patients with Alzheimer’s disease. It highlighted, in the form of a chromosomal abnormality, may have been the risk factor in Alzheimer’s disease.