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Well this is only a start since I am not good at actuarial matters, but I have a daughter with a different form of trisomy and so I was curious myself.
The NIH reports that trisomy 13, or Patau syndrome,
1) occurs in one in 10,000 newborns
2) more than 80% of these children die in the first year*
*the Lucille Packard children's hospital of Stanford reports:
"Unfortunately, 90 percent of babies born with trisomy 18 or 13 die by age 1. It is important to note that 5 to 10 percent of babies with trisomy 18 or 13 do survive the first year of life. Therefore, these disorders are not universally fatal and, in the absence of any immediate life-threatening problems, accurate predictions of life expectancy are difficult to make. There are a few reports of babies with trisomy 18 or 13 surviving to their teens, however, this is unusual." [Emphasis mine]
There is a list of symptoms and complications but no "life expectancy" computations are listed so some assumptions are required. On the other hand, if the incidence and population were known, the life expectancy could be computed but since we have neither, accuracy is limited.
Wolfram Alpha reports (2008 estimate) that 4.29 million children are born each year in the US. An incidence of one in 10,000 for this figure, means 429 per annum. A year later, perhaps 21-86 remain.
To get to some figure, some assumptions are needed. If you make both optimistic and pessimistic ones they may cancel out. I haven't got the stamina to proceed but if you must, you could consider a 10% first year survival rate (optimist) and then than none survive past age 19 (pessimist).
You could fit a bezier curve to the life expectancy or do a straight-line estimate between the (also estimated) data points.
Keep in mind that the one in 10,000 incidence is a gross estimate. Nothing in medicine is so precise and incidence rates are useless. You either have trisomy or you don't. If you are not merely curious, but you have a child with trisomy, seek out parents who also have (had) a child with trisomy. They can help you more than anyone else. I've been there. Best Wishes.
What else can I help you with?
What are alternative names for Patau syndrome?
Patau's Syndrome Trisomy 13 Syndrome Trisomy D Syndrome Trisomie 13 Trisomee Trisome Trisomic Chromosomal Abnormalities, Chromosome Anomalies, Disorder Fetal Aneuploidy
Which congenital heart defects occur in trisomy 13 trisomy 18 and down syndrome?
Congenital heart defects are common in trisomy 13 (Patau syndrome), trisomy 18 (Edwards syndrome), and Down syndrome (trisomy 21). In trisomy 13, defects often include ventricular septal defects and atrioventricular canal defects. Trisomy 18 is frequently associated with ventricular septal defects and patent ductus arteriosus. Down syndrome typically presents with atrioventricular septal defects and ventricular septal defects as the most prevalent heart abnormalities.
What is the incidence of patau syndrome?
Patau syndrome, also known as Trisomy 13, is an abnormality of chromosomes in which a patient has an additional 13th chromosome due to a failure of chromosomes to split during meiosis. It can cause the following conditions: motor & mental retardation, extra digits, microcephaly, low-set ears, failure of the forbrain to divide properly, heart defects, eye defects, cleft palate, spinal defects, abnormal genitalia, abnormal palm patterns or overlapping of fingers over thumb. Photos of children with Patau Syndrome - Trisomy 13.
What is the presence of three of a particular chromosome?
The presence of three copies of a particular chromosome is known as trisomy. This genetic condition can lead to developmental abnormalities, such as Down syndrome which is caused by trisomy of chromosome 21.
Are there cases of trisomy besides down syndrome that can survive?
My son is 3 years old with full trisomy 18. I have some videos on youtube that I've put together with lots of trisomy families I've found on facebook. My awareness video is of over 100 surviving kids of trisomy 13 and 18. Just go to youtube and search 'trisomy awareness' or trisomy advocacy' and you'll find them. There is also a website called 'livingwithtrisomy13.com' that has stories of over 100 trisomy 13 kids on it. I, also, personally know of two kids with trisomy 8. So, yes, there are cases of kids surviving trisomies other than trisomy 21 (Down Syndrome). :) Alisha Hauber
What are mutation that result in death?
These are called fatal genetic mutations. Same examples are: Tay-Sachs disease, Neimann-Pick disease, Trisomy 18 and Trisomy 13 are "Edwards Syndrome" and "Patau Syndrome," respectively and Cystic fibrosis
What is the different autochromosomal abnormalities?
Common autosomal chromosomal abnormalities include Down syndrome (trisomy 21), Edwards syndrome (trisomy 18), Patau syndrome (trisomy 13), and Turner syndrome (monosomy X). These abnormalities result from errors in chromosome number, leading to characteristic physical and developmental features. Diagnosis is often made through genetic testing such as karyotyping or chromosomal microarray analysis.
What is Trisomy?
A trisomy is a condition in which a person has three copies of a chromosome instead of the usual two copies. Trisomy 9 refers to three copies of chromosome 9. A person can have full trisomy 9 (three copies in every cell) or mosaic trisomy 9 (three copies in some cells but not all).
Which chromosomes are effected in trisomy 13?
Patau syndrome is the result of trisomy 13. Trisomy 13 is usually caused by having an extra chromosome in every cell in the body. Every cell in the human body should contain two chromosomes, one from each parent, however every one in sixteen thousand newborn has three chromosomes. The result of a third chromosome can mean physical disabilities. Most children die within a few days after birth. The disease is not inherited.
Is Down syndrome a single gene or polygenic trait?
Down syndrome is a result of having an extra chromosome in one's genes. Chromosome thirteen* if your that much into the science. It is also called trisomy 21 because the chromosome 21 is the one with the abnormalities. *Abnormalities with chromosome thirteen is called Patau syndrome or trisomy 13.
Which word would geneticists use to describe the cause of Patau syndrome?
Geneticists would describe the cause of Patau syndrome as "trisomy," specifically trisomy 13. This condition occurs when there are three copies of chromosome 13 instead of the usual two, leading to developmental and physical abnormalities. The extra genetic material disrupts normal development, resulting in the symptoms associated with Patau syndrome.
Where can you find information on Down syndrome in canines?
I searched for canine trisomy in the internet. It looks like they can have a trisomy 1 whcih causes some types of cancers, trysomy 13 (thyroid issues) and 18. The word is actually trisomyism. Downs is trisomy 21. Humans are also sometimes born with a trisomy 19. Each has it's own name after the doctor who discovered them, Edwards, Downs, and Bach. Did not find any canine with trisomy 21
