<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>1561-3194</journal-id>
<journal-title><![CDATA[Revista de Ciencias Médicas de Pinar del Río]]></journal-title>
<abbrev-journal-title><![CDATA[Rev Ciencias Médicas]]></abbrev-journal-title>
<issn>1561-3194</issn>
<publisher>
<publisher-name><![CDATA[Editorial Ciencias Médicas]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1561-31942021000500009</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Estudios citogenéticos en pacientes con fallas reproductivas. Pinar del Río, 2015-2020]]></article-title>
<article-title xml:lang="en"><![CDATA[Cytogenetic studies in patients with reproductive failure. Pinar del Río, 2015-2020]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez]]></surname>
<given-names><![CDATA[Irenia Blanco]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez]]></surname>
<given-names><![CDATA[Sahily Miñoso]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Torres]]></surname>
<given-names><![CDATA[María del Carmen Mitjans]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Ciencias Médicas de Pinar del Río Centro Provincial de Genética Médica ]]></institution>
<addr-line><![CDATA[Pinar del Río ]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>10</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>10</month>
<year>2021</year>
</pub-date>
<volume>25</volume>
<numero>5</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S1561-31942021000500009&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S1561-31942021000500009&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S1561-31942021000500009&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción: el estudio citogenético en linfocitos de sangre periférica es una herramienta muy utilizada para el diagnóstico de diferentes cromosomopatías de origen genético en pacientes con fallas reproductivas.  Objetivo:  describir los resultados del diagnóstico citogenético postnatal realizado a los pacientes con fallas reproductivas.  Métodos: se efectuó un estudio descriptivo, retrospectivo en la provincia de Pinar del Río de enero del año 2015 hasta diciembre del 2020, a partir de los resultados del diagnóstico cromosómico en sangre periférica en pacientes que fueron remitidos al centro provincial de genética médica por fallas reproductivas, los cuales se clasificaron en tres grupos de acuerdo con el criterio de indicación.  Resultados: en el período analizado, se diagnosticaron 12 casos con anomalías cromosómicas, de los cuales el 58,3 % correspondieron a aneuploidías cromosómicas numéricas, el 25 % a mosaicos cromosómicos y el 17 % con aberraciones cromosómicas estructurales. Resaltar que el 9 % de los casos diagnosticados presentaban variantes polimórficas, sobre todo del cromosoma 9. El aborto espontáneo fue el motivo de indicación más frecuente para el estudio citogenético.  Conclusiones: es relevante la importancia del estudio citogenético en sangre periférica a las personas con fallas reproductivas, con el fin de establecer un diagnóstico certero, oportuno y brindar en el asesoramiento genético los elementos etiológicos para las opciones reproductivas futuras de estas parejas.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction:  cytogenetic study in peripheral blood lymphocytes is a widely used tool for the diagnosis of different chromosomal pathologies of genetic origin in patients with reproductive failure.  Objective:  to describe the results of postnatal cytogenetic diagnosis in patients with reproductive failure.  Methods:  a descriptive, retrospective study was carried out in Pinar del Río province from January 2015 to December 2020, based on the results of chromosomal diagnosis in peripheral blood in patients who were referred to the provincial center of medical genetics for reproductive failures, which were classified into 3 groups according to the indication criteria.  Results:  in the analyzed period, 12 cases with chromosomal anomalies were diagnosed, where 58,3 % corresponded to numerical chromosomal aneuploidies, 25 % to chromosomal mosaics and 17 % to structural chromosomal aberrations. It should be pointed out that 9 % of the diagnosed cases presented polymorphic variants, especially of chromosome-9. Spontaneous abortion was the most frequent reason for indication for cytogenetic study.  Conclusions:  the importance of cytogenetic study in peripheral blood is relevant in people with reproductive failure, in order to establish an accurate and timely diagnosis and to provide genetic counseling with etiological elements for the future reproductive options of these couples.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[INFERTILIDAD]]></kwd>
<kwd lng="es"><![CDATA[ABORTOS ESPONTÁNEOS]]></kwd>
<kwd lng="es"><![CDATA[ABERRACIONES CROMOSÓMICAS]]></kwd>
<kwd lng="es"><![CDATA[PACIENTE]]></kwd>
<kwd lng="en"><![CDATA[KARYOTYPE]]></kwd>
<kwd lng="en"><![CDATA[FERTILITY]]></kwd>
<kwd lng="en"><![CDATA[ABORTION, SPONTANEOUS]]></kwd>
<kwd lng="en"><![CDATA[CHROMOSOME ABERRATIONS]]></kwd>
<kwd lng="en"><![CDATA[PATIENT]]></kwd>
</kwd-group>
</article-meta>
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