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Doctor insights on: What Is Trisomy 23

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Dr. Liza Kunz
Board Certified, Maternal-Fetal Medicine
16 years in practice
2M people helped
1

1
What is trisomy 23? Whats the official name for it?

Dr. Liza Kunz
Board Certified, Maternal-Fetal Medicine
16 years in practice
2M people helped
What is trisomy 23? Whats the official name for it?

Klinefelter's: This link has some great information about klinefelters: http://trisomydisorders.Wordpress.Com/2008/10/30/trisomy-23/. ...Read more

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Dr. Marsha Davis
Board Certified
23 years in practice
66M people helped
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Dr. Marsha Davis
Board Certified
23 years in practice
66M people helped
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Dr. Scott McLean
Board Certified, Clinical Genetics
30 years in practice
207K people helped
2

2
I'm a 36 year old woman pregnant with my first child. My first pregnancy ended in miscarriage - trisomy 23. Should I get a cvs test?

Dr. Scott McLean
Board Certified, Clinical Genetics
30 years in practice
207K people helped
I'm a 36 year old woman pregnant with my first child. My first pregnancy ended in miscarriage - trisomy 23. Should I get a cvs test?

Talk with your OB: The risk for trisomy increases for women over age 35. A number of different chromosomal abnormalities - including different trisomies - can happen at any age. Most often, these cause severe problems and the pregnancy is lost. Rarely a trisomy or other chromosome problem is the result of a rearrangement that one parent silently carries. Be sure show your OB the test results from your miscarriage. ...Read more

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Dr. Marsha Davis
Board Certified
23 years in practice
66M people helped
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Dr. Marsha Davis
Board Certified
23 years in practice
66M people helped
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Dr. James Ferguson
Board Certified, Pediatrics
41 years in practice
145M people helped
3

3
What is trisomy?

Dr. James Ferguson
Board Certified, Pediatrics
41 years in practice
145M people helped
What is trisomy?

Error in formation: Humans have 23 pairs of chromosomes or 46 total. During the formation of the egg, each pair splits and one of each travels to the egg. At conception, the sperm brings one of each & the new embryo now has 23 pairs (two of each). Any time one of the chromosome pairs doesn't split & gives a pair to the egg, a third will come from the sperm and a trisomy of that chromosome is formed. ...Read more

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Dr. Alan Kelly
Board Certified, Internal Medicine
22 years in practice
211K people helped
4

4
Can you please explain what Trisomy 16 is and list the symptoms for me? Thank you.

Dr. Alan Kelly
Board Certified, Internal Medicine
22 years in practice
211K people helped
Can you please explain what Trisomy 16 is and list the symptoms for me? Thank you.

Trisomy 16: Trisomy 16 is a fetus w/ three copies of this chromosome instead of the usual 2. It is responsible for almost 10% of miscarriages in the US. Although full trisomy 16 is not compatible w/ life, there are children born with partial trisomy 16. These children have heart and vascular problems, delayed growth, speech and physical development, reproductive disorders and kidney problems. Trisomy16.org ...Read more

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Dr. Marsha Davis
Board Certified
23 years in practice
66M people helped
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Dr. Scott McLean
Board Certified, Clinical Genetics
30 years in practice
207K people helped
5

5
What complications could a baby with trisomy 16 experience?

Dr. Scott McLean
Board Certified, Clinical Genetics
30 years in practice
207K people helped
What complications could a baby with trisomy 16 experience?

This is complicated.: It's complicated because full trisomy 16 is 99.9% fatal before birth. Newborns with partial trisomy 16 may live - most have multiple birth defects and serious developmental problems. The exact types of birth defects are different depending on what parts of chromosome 16 are duplicated. Your clinical geneticist or genetic counselor can help. You can find a GC here: http://nsgc.org/p/cm/ld/fid=164. ...Read more

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Dr. Richard Bensinger
Board Certified, Ophthalmology
47 years in practice
32M people helped
6

6
What is the definition or description of: trisomy?

Dr. Richard Bensinger
Board Certified, Ophthalmology
47 years in practice
32M people helped

Chromosomal tripled: Ordinary chromosomal traits require a pair of chromosomes to determine the traits. Occasionally, as a mistake in cellular division, there is a tripling of one of the chromosomes. When these occur, they usually cause unpleasant, and sometimes deadly conditions in the inheritor of these traits (e.g. Down's). Many we do not know about as they are lethal prior to birth. ...Read more

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Dr. Kathleen Mayor-lynn
Board Certified, Maternal-Fetal Medicine
14 years in practice
70K people helped
7

7
Now is a partial trisomy formed?

Dr. Kathleen Mayor-lynn
Board Certified, Maternal-Fetal Medicine
14 years in practice
70K people helped

Partial trisomy: "partial" trisomy refers to only having an extra copy of part of the chromosome, not the entire chromosome as is the case in full trisomies. The extra piece is usually inserted into or attached to another chromosome. Hope that helps. ...Read more

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Dr. Danae Steele
Board Certified, Maternal-Fetal Medicine
26 years in practice
207K people helped
8

8
What is patau syndrome, a trisomy?

Dr. Danae Steele
Board Certified, Maternal-Fetal Medicine
26 years in practice
207K people helped
What is patau syndrome, a trisomy?

Trisomy 13: Patau syndrome is also called trisomy 13. It occurs when a baby has 3 copies of the number 13 chromosome instead of the usual 2 copies. It causes severe physical problems and most babies with trisomy 13 die before birth or within the first year after birth. It usually happens because of an accident which occurs when the egg is fertilized, and occurs more commonly as mothers get older. ...Read more

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Dr. Heidi Fowler
Board Certified, Psychiatry
20 years in practice
532M people helped
9

9
How to know if certain people are more likely to get trisomy number 13 patau syndrome than others?

Dr. Heidi Fowler
Board Certified, Psychiatry
20 years in practice
532M people helped

Amniocentesis: Trisomy 13 can be diagnosed by amniocentesis with genetic study of the chromosomes prior to birth. ...Read more

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Dr. Golder Wilson
Board Certified, Clinical Genetics
95K people helped
10

10
I heard that certain people are more likely to get trisomy number 13 patau syndrome than others, why is that?

Dr. Golder Wilson
Board Certified, Clinical Genetics
95K people helped

Child of older mom: Increasing maternal age increases the risk for chromosome disorders, highlighted by trisomy 21 (down syndrome) but applying to rarer trisomies like the trisomy 13 causing patau syndrome (1 in 8000 births or so). Risks for trisomy increase gradually with maternal age, going from <1 in 2000 under 30 to ~ 1 in 50 over age 40, with age 35 arbitrarily set as high risk (~1 in 200). ...Read more

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Dr. Marsha Davis
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23 years in practice
66M people helped
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