
Episode #22
Rethinking Donor Carrier Screening: with Ali and Katherine Rose
Guest: Katherine Rose, Genetic Counselling Manager, Newlife IVF Host: A/Prof Alison Archibald Test enough genes and everyone is a carrier for something. In over 90% of reproductive couples screened for more than 1000 genes, at least one partner has a carrier result. That is manageable using a couple-based screening approach. In a donor program, where a genetic counsellor must match one donor's report against one recipient's report, often from different labs and different panels, it becomes a clinical risk. Katherine Rose rebuilt that process at Newlife IVF. She explains why the clinic moved from individual carrier reports to couples-based reproductive carrier screening across more than 1,000 genes, and what changed for donors, recipients and the genetic counselling team. In this episode: Who uses donor conception. Identity-release donors versus known donors, and local versus international programmes. The full donor workup: G-banded karyotype, haemoglobinopathy screening, an extended medical and family history questionnaire, and carrier screening. Why individual carrier screening reports caused problems. Recipients avoided donors who carried more conditions. Panels could not be compared. Pre-test counselling took too long. How the couples-based model works. The donor's de-identified sample is held at the lab and run alongside the recipient's sample when a donor is selected. What happens with an increased-chance result. The recipient selects a different donor and the lab re-analyses the sample at no extra cost, with no repeat test and no second wait. Why egg donors still need a preliminary X-linked screen before recruitment. Two messages for clinicians without a genetics background: a low-chance result is not no risk, and no panel tests for everything. The case for a national carrier screening program, and why "one gene list, please" is the clearest request clinicians have made. Worth your time if you work in fertility, reproductive genetics, obstetrics or general practice, or if you are considering donor conception and want to understand what screening can and cannot tell you. The GenoCare Podcast covers the practical design of genomic care: clinical decisions, workflows, and what it takes to deliver at scale.





