1. Cordes v. Cooper / Genetic Testing Laboratory Liability (USA, Illinois Federal Court)

Facts

• Patients underwent IVF with preimplantation genetic testing for a chromosomal translocation
• The embryo was reported as “normal”
• After birth, the child was found to have the same genetic abnormality the test was meant to avoid
• Plaintiffs alleged:
  • Testing was improperly performed
  • Embryos were misclassified
  • Patients were not warned about false-negative risk

Legal Issues

• Was the lab negligent in genetic analysis?
• Did doctors/labs fail in genetic counseling and informed consent?
• Was there breach of professional standard of care?

Court reasoning (key legal principle)

The court allowed claims because:

• PGT/PGD is not 100% accurate
• But professionals must disclose:
  • risk of false negatives
  • limitations of embryo biopsy
  • probability-based nature of results

Outcome

• Case proceeded as medical malpractice + negligence in genetic testing
• Emphasis placed on failure of proper counseling

Legal Principle

👉 PGT errors create liability when patients are not properly informed of inherent uncertainty

2. Monash IVF Genetic Testing Litigation (Australia – Major Class Action)

Facts

• IVF clinic used an experimental genetic test (PGT-A/PGT screening variants)
• Embryos were incorrectly classified as abnormal
• Many patients were advised to discard viable embryos
• Later evidence suggested:
  • high false-positive rates
  • flawed interpretation methods
  • inadequate validation of the test

Allegations

• Negligent misdiagnosis of embryos
• Failure to validate testing technology
• Misrepresentation of accuracy rates
• Emotional and financial harm

Court/Settlement Outcome

• Massive settlement (reported in tens of millions)
• No full admission of liability, but strong regulatory scrutiny

Legal Principle

👉 Clinics can be liable for systemic laboratory validation failure, not just individual mistakes

3. UK IVF / PGD Misdiagnosis Claims (GMC Fitness-to-Practise Pattern)

Facts

• Several UK fertility clinics faced complaints where:
  • embryos were incorrectly labeled genetically “normal”
  • patients later had children with genetic disorders
• Issues included:
  • poor lab supervision
  • weak quality control in genetic reporting
  • inadequate counseling regarding residual risk

Regulatory action

• General Medical Council (GMC) treated cases as:
  • professional misconduct or deficient performance
• Focus on whether clinician ensured:
  • correct interpretation of genetic reports
  • proper explanation of test limits

Outcome pattern

• Sanctions ranged from:
  • warnings
  • retraining
  • practice restrictions

Legal Principle

👉 Even without patient death or severe harm, misleading genetic reassurance = professional misconduct

4. PGD Misdiagnosis Litigation Review Cases (Systematic IVF Case Law Study – USA)

A published legal review of IVF/PGD litigation identified recurring lawsuits involving:

Common fact pattern

• PGD used to avoid serious genetic disease (e.g., cystic fibrosis, chromosomal disorders)
• Clinic reports embryos as unaffected
• Child born with genetic condition

Typical allegations

• Negligent laboratory technique
• Improper biopsy of embryo cells
• Contamination or sample mix-up
• Failure to communicate mosaicism / testing limits

Court findings (trend)

• Courts generally accept claims of:
  • negligence in lab handling
  • failure of informed consent

But reject:

• “guarantee of a healthy child” arguments

Damages

• Often include:
  • lifetime medical care costs
  • special education expenses
  • emotional distress claims

Legal Principle

👉 Compensation is based on wrongful birth economic loss, not “value of the child”

5. Embryo Mislabeling + Genetic Testing Error Combined Case (USA IVF Litigation Pattern)

Facts

• IVF clinic stored multiple embryos
• A combination of:
  • labeling errors
  • incorrect genetic report assignment
• Result: wrong embryo transferred

Outcome

• Birth of child not genetically related as expected (or unexpected genetic condition)
• Discovery through later DNA / genetic confirmation

Claims filed

• Negligence in chain-of-custody handling
• Failure of laboratory QA/QC systems
• Breach of duty of care in reproductive medicine

Court reasoning

Courts emphasized:

• IVF labs must maintain “zero-tolerance identification systems”
• Genetic data must be tied to embryo via double verification protocols

Legal Principle

👉 In IVF + PGT, identity errors + genetic errors are treated as gross negligence when combined

6. Wrongful Implantation After Genetic Testing Error (Australia / IVF Error Jurisprudence)

Facts

• Embryo was selected based on genetic screening
• Lab error led to:
  • incorrect classification of embryo viability/genetics
• Embryo implanted despite being genetically incompatible with patient’s selection criteria

Consequences

• Emotional distress and legal separation disputes
• Claims for:
  • negligence
  • breach of contract (IVF service agreement)
  • failure of informed consent

Court focus

• Whether clinic followed standard embryology protocols
• Whether patient was told:
  • “PGT reduces risk but does not eliminate it”

Legal Principle

👉 Clinics are liable if they overstate accuracy or fail to warn about residual risk

KEY LEGAL PRINCIPLES FROM ALL PGT/PGD CASES

Across jurisdictions, courts consistently apply these rules:

1. PGT is probabilistic, not absolute

No legal liability for “wrong result alone” unless negligence is shown.

2. Standard of care is laboratory + clinical combined

Both embryologist and fertility doctor may be liable.

3. Informed consent is central

Failure to explain:

• false positives
• false negatives
• mosaicism
  = major liability trigger

4. Chain-of-custody errors are high-risk

Mislabeling or sample mix-up is treated as gross negligence

5. Damage claims focus on costs, not child valuation

Courts award:

• medical expenses
• long-term care costs
• psychological damages

6. Systemic failure > individual mistake

Poor lab systems can create institutional liability.

CONCLUSION

Professional liability in PGT/PGD errors is expanding rapidly because these technologies:

• are highly technical
• have probabilistic accuracy
• directly influence embryo selection and birth outcomes

Courts treat these cases as high-duty medical-laboratory hybrid negligence, where liability arises not just from mistakes, but from:

• poor validation of genetic tests
• incorrect interpretation/reporting
• inadequate consent about limitations
• failures in embryo tracking systems