2016 · Hormone and metabolic research = Hormon- und Stoffwechselforschung = Hormones et metabolisme · paywalled
SDH Subunit Mutation Status in Saliva: Genetic Testing in Patients with Pheochromocytoma
Osinga et al.
The finding, in our words
Saliva collected with the Oragene DISCOVER kit from 30 patients with pheochromocytoma or paraganglioma produced DNA concentrations comparable to paired venous blood, though with slightly lower purity from protein contamination. Saliva is a viable alternative to blood for germline screening of SDHB and SDHD mutations in this population.
A paraphrase to the Library’s standard, never the abstract. The source is one link away and is always the authority.
The study found that the Oragene OG-600 receptacle provided the highest concentration of salivary DNA, including short fragments suitable for analysis, and successfully detected HPV DNA from patient saliva. This matters for decentralised sampling as it supports the use of a standardised, self-collection device for non-invasive cancer biomarker detection.
Self-collected saliva samples provided adequate DNA for genotyping in preterm birth research, though questionnaire data on birth details had limited concordance with prospective records, indicating that while DNA sampling is feasible via post, phenotyping requires more reliable data collection methods for genetic studies.
Telomere length measurements vary significantly depending on the sample type used, with Oragene saliva showing a moderate correlation to venous buffy coat, whereas Oasis saliva and dried blood spots did not yield comparable or adequate results for this assay.
Across five extraction protocols, storage time generally reduced DNA quantity but protocol 1 (Oragene) maintained yield; DNA purity was largely unaffected by storage for commercial protocols but declined for non‑commercial methods; only protocol 1 consistently gave unfragmented DNA and protocols 1–4 yielded amplifiable DNA while protocol 5 rarely did. This supports reliable saliva self‑collection and long‑term storage for genotyping in decentralised settings.
With Oragene DISCOVER self-collection, saliva SNP-array genotypes matched blood at 99.996% concordance; about 6% of samples failed on low yield, so an occasional repeat should be expected.