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  2. Patau syndrome - Wikipedia

    en.wikipedia.org/wiki/Patau_syndrome

    Trisomy 13 is the cause of Patau syndrome, which means each cell in the body has three copies of chromosome 13 instead of the usual two. A small percentage of cases occur when only some of the body's cells have an extra copy; such cases are called mosaic trisomy 13. [citation needed]

  3. Triploid syndrome - Wikipedia

    en.wikipedia.org/wiki/Triploid_syndrome

    Trisomy 13 (Patau syndrome), trisomy 18 (Edwards syndrome) Triploid syndrome , also called triploidy , is a chromosomal disorder in which a fetus has three copies of every chromosome instead of the normal two.

  4. Pallister–Killian syndrome - Wikipedia

    en.wikipedia.org/wiki/Pallister–Killian_syndrome

    This method can diagnose PKS in 10 week and older fetuses. In cfDNA screening, DNA from a mothers blood is extracted and screened for the presence of specific chromosome abnormalities such as those associated with the Down syndrome, Patau syndrome (also termed trisomy 13 [8]), and Edwards syndrome (also termed trisomy 18 [9]).

  5. Mosaic (genetics) - Wikipedia

    en.wikipedia.org/wiki/Mosaic_(genetics)

    Mosaicism or genetic mosaicism is a condition in which a multicellular ... [13] Trisomies, monosomies, and related conditions ... Although most forms of trisomy are ...

  6. Chromosome 13 - Wikipedia

    en.wikipedia.org/wiki/Chromosome_13

    Trisomy 13: Trisomy 13 occurs when each cell in the body has three copies of chromosome 13 instead of the usual two copies. Trisomy 13 can also result from an extra copy of chromosome 13 in only some of the body's cells (mosaic trisomy 13). In a small percentage of cases, trisomy 13 is caused by a rearrangement of chromosomal material between ...

  7. Confined placental mosaicism - Wikipedia

    en.wikipedia.org/wiki/Confined_placental_mosaicism

    The common autosomal trisomies (21, 18, 13) made up a smaller number of cases of mosaicism detected on CVS, but were more often confirmed in fetal tissue (19%). [3] On the other hand, the uncommon autosomal trisomies accounted for a greater number of placental mosaicism cases, but were less often confirmed in fetal tissue (3.2%). [ 3 ]

  8. A mom of 3 learned she had mosaic Down syndrome through ... - AOL

    www.aol.com/lifestyle/mom-3-learned-she-had...

    Trisomy 21, one of the three types of Down syndrome, indicates that an individual has a duplicate of chromosome 21. ... She says she notices some of the potential symptoms of her own mosaic Down ...

  9. Trisomy 18 - Wikipedia

    en.wikipedia.org/wiki/Trisomy_18

    Occasionally, not all cells have the extra chromosome, known as mosaic trisomy, and symptoms in these cases may be less severe. [3] An ultrasound during pregnancy can increase suspicion for the condition, which can be confirmed by amniocentesis. [2] Treatment is supportive. [2]