# Validation of the NovaSeq6000 platform and automated library preparation for CE-IVD equivalence

## TL;DR

This study validates the Illumina NovaSeq6000 platform with automated library preparation for clinical exome sequencing, showing it performs as well as a CE-IVD certified system.

## Contribution

The study demonstrates analytical equivalence of an automated RUO platform to a CE-IVD certified system for clinical WES.

## Key findings

- The RUO platform achieved 100% concordance with the CE-IVD system for clinically relevant SNVs.
- For CNVs larger than 150 kb, the positive percent agreement was 79%, increasing to 91.7% for CNVs > 900 kb.
- Coverage uniformity and autosomal callability were consistently high across both platforms.

## Abstract

The implementation of next-generation sequencing (NGS) technologies in clinical diagnostics requires rigorous validation of sequencing platforms and analytical workflows. In this study, we validated the performance of the Illumina NovaSeq6000 Research Use Only (RUO) platform, combined with automated library preparation using the Hamilton Microlab STAR system, by comparison to the CE-IVD certified NovaSeq6000Dx platform, which currently relies on manual library preparation. A total of 96 clinical samples underwent whole-exome sequencing (WES) on both platforms. Variant detection performance was assessed for single nucleotide variants (SNVs) and copy number variants (CNVs). The RUO platform demonstrated 100 % concordance with the CE-IVD system for clinically relevant SNVs, with full agreement across positive, negative, and overall percent agreement metrics. For CNVs larger than 150 kb, the positive percent agreement was 79 %, rising to 91.7 % for CNVs > 900 kb. Coverage uniformity and autosomal callability were consistently high across platforms. These results confirm the analytical equivalence of the NovaSeq6000 RUO configuration with automated library preparation for clinical-grade WES. This validation framework supports the adoption of scalable, cost-effective workflows that can achieve diagnostic performance comparable to CE-IVD certified systems and may facilitate routine implementation of exome sequencing in clinical laboratories.