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Trisomy 1 in a clinically recognized IVF pregnancy.
T M Dunn1, L Grunfeld, N B Kardon
1Department of Human Genetics, Mount Sinai Medical Center, New York, New York 10029, USA. Teresa.Dunn@mssm.edu
American Journal of Medical Genetics
|March 10, 2001
Summary
This study reports the second known case of full trisomy 1, a rare chromosomal abnormality. This finding advances understanding of chromosomal disorders and their impact on early development.
Area of Science:
- Human Genetics
- Reproductive Biology
- Cytogenetics
Background:
- Most chromosomal trisomies result in spontaneous abortion.
- Trisomies for all human chromosomes have been documented.
- Trisomy 1 is the last human chromosome trisomy to be identified.
Observation:
- A second case of full trisomy 1 was identified in products of conception.
- The patient conceived via in vitro fertilization (IVF).
- Early pregnancy monitoring included hormonal assays and ultrasound, which confirmed implantation but lack of fetal heartbeat.
Findings:
- Cytogenetic analysis of chorionic villi revealed a 47,XY,+1 chromosomal complement in all cells.
- This represents the second documented instance of full trisomy 1 in medical literature.
Implications:
- This case contributes to the limited understanding of full trisomy 1.
- Further research is needed to elucidate the mechanisms and consequences of this rare chromosomal condition.
- The findings may inform genetic counseling for individuals undergoing assisted reproductive technologies.