Genomic testing depends on a service that selects, explains and follows up the test—not only a laboratory that reads DNA. A Queensland audit of children investigated for inborn errors of immunity illustrates how organising that pathway can change testing practice. Its findings concern a particular paediatric service, rather than a universal recipe for genetic testing. Original study
The University of Queensland’s October announcement highlights in-house pathology and more direct access to specialists. Those are changes in how care is organised. The announcement’s rapid-turnaround examples should not become a promise that every child will receive an answer within two weeks. Institutional account
The service is part of the intervention
The audit reviewed records from 2017 to 2025: 322 patients and 481 genomic tests. A patient and a test are different units because some children underwent more than one test. The researchers compared practice before and after implementation of a multidisciplinary model, using 2021 as the comparison boundary. Methods and service comparison
They reported less duplicate testing and changes in consent documentation and diagnostic yield. A retrospective before-and-after design can describe an association with service change, but it cannot isolate that change from developments in testing, referral patterns and clinical practice over time.
The headline percentage has a smaller denominator
The paper reports a management-change recommendation for 71 of 79 patients in a defined molecularly diagnosed group: 89.9%. That is not 89.9% of all 322 patients. Nor does a recorded recommendation establish that a treatment was delivered or improved the child’s health. Management outcomes
This distinction makes the pathway visible. A molecular finding must be interpreted in the context of the child’s condition, discussed and translated into an actual care decision. A diagnostic result, a management recommendation and an observed benefit remain different outcomes.
Families still need explanations after a result
A related family-experience study adds a different perspective. The accessible June 2025 preprint reports interviews with 17 parents and describes the value of multidisciplinary care alongside continuing information and emotional-support needs. Its service model included an embedded genetic counsellor and links with pathology. Family-study preprint
This is the earlier version of a study subsequently published in the European Journal of Human Genetics. It is a small qualitative account from the same programme, not an independent estimate of how all families respond. Its contribution is the experience around testing, which a laboratory-yield percentage cannot describe.
The interviews also show why receiving no diagnosis does not produce one uniform reaction. Uncertainty, relief and frustration can require different explanations. That does not establish a care protocol; it identifies support needs reported in this particular research.
What the audit leaves open
The audit relies on clinical records and does not provide a formal economic evaluation or establish a survival improvement. The university’s account describes the intended value of faster, better-connected care; the audit supplies a more bounded service observation. Audit, announcement
For another service, the useful questions concern access to expertise, laboratory coordination, result communication and what happens when an answer is uncertain. This is distinct from polygenic embryo screening: it concerns diagnostic investigation of childhood immune disorders and the work needed around a test result.