Linked from

The 26 pages that link to Preimplantation genetic testing, each with the reason it gives.

• Embryonic developmentRelated: It applies knowledge of early embryos to assess inherited conditions before pregnancy is established.

• MosaicismRelated: A small biopsy may not represent every cell in a mosaic embryo.

• ZygoteRelated: Testing usually examines cells from embryos that developed after the zygote stage.

• Assisted reproductive technologyRelated: Some ART cycles include embryo testing to inform transfer decisions.

• Variant of uncertain significanceRelated: Uncertain variants raise difficult questions about whether embryos can be meaningfully classified.

• BlastocystRelated: Testing commonly samples a few trophoblast cells from a blastocyst.

• Huntington's diseaseRelated: It can help families at risk avoid transmitting an expanded HTT allele.

• Carrier screeningRelated: Partners who share a risk variant may use it to reduce the chance of an affected pregnancy.

• OocyteRelated: The test is performed on embryos created by fertilizing oocytes.

• CytogeneticsRelated: Chromosome analysis can help assess embryos for aneuploidy before transfer.

• Embryo transferRelated: Testing may inform which embryo is selected, but does not guarantee implantation or birth.

• HeteroplasmyRelated: Testing can estimate pathogenic mitochondrial variant levels in sampled embryo cells.

• Mitochondrial replacement therapyRelated: Embryo testing can measure mitochondrial variants, though sampling cannot guarantee an embryo’s future outcome.

• Reproductive technologiesRelated: It links embryo selection with genetic information before pregnancy begins.

• X-linked dominant inheritanceRelated: It can identify embryos carrying a known familial X-linked variant.

• Inner cell massRelated: Testing methods must distinguish sampled trophectoderm cells from the unsampled inner cell mass.

• Fanconi anemiaRelated: It can help families with known Fanconi anemia variants avoid transmitting the disorder.

• Human embryonic developmentRelated: It examines embryos before implantation, during the developmental stages covered here.

• 16-cell stageRelated: Embryo biopsy and testing can occur during preimplantation development, although sampling is not defined by a 16-cell count.

• Chromosome abnormalityRelated: Testing can assess chromosome number or structure in embryos.

• Human fertilizationRelated: It examines embryos produced after laboratory fertilization without changing how fertilization occurs.

• In vitro fertilisationRelated: It uses laboratory-created embryos to assess specific genetic risks before transfer.