Overview - ISO/IEC 23092-1:2020 (Genomic information representation - Transport and storage)
ISO/IEC 23092-1:2020 defines a standardized framework for the transport and storage of genomic information, focusing on data formats, syntax/semantics and the conversion process between transport and file formats. Designed for the era of high-throughput sequencing (HTS), this standard introduces an abstract, interoperable representation of sequencing and alignment data to enable efficient compression, selective access and secure multiplexing of metadata with genomic data.
Key topics and technical requirements
- Genomic record model: A compact logical unit that groups a single or paired read with associated sequencing, alignment and quality information.
- Access units and clustering: Access units are the smallest decodable units in the compressed domain; genomic records are grouped into clusters for high compression and fast selective access.
- Data classes: Reads are categorized into six classes (five alignment-based classes plus an unmapped/raw class) to enable targeted filtering and retrieval.
- File and transport format structures: Detailed definitions for headers, dataset groups, datasets, access units, blocks, indexing and descriptor streams that distinguish file-format vs transport-format elements.
- Syntax, semantics and bit-level rules: Specifications include tabular syntax conventions, bit ordering and syntax functions to ensure precise encoding/decoding.
- Selective access strategies: Mechanisms for efficient partial retrieval of sequences without full decompression.
- Conversion and depacketization: Reference procedures to convert transport format to file format and vice versa.
- Privacy, metadata and protection: Framework for multiplexing metadata and applying layered protection and access control.
- Conformance and reference implementation: A normative reference implementation and conformance procedure support interoperability and validation.
Practical applications and who uses it
ISO/IEC 23092-1:2020 is intended for organizations and professionals working with large-scale genomic datasets:
- Bioinformatics software developers implementing compressed genomic formats and APIs
- Sequencing centers and core labs managing HTS data storage and transmission
- Cloud and archival storage providers optimizing genomic data transport and retrieval
- Clinical labs and EHR/informatics vendors requiring secure, interoperable genomic exchange
- Data repositories, research consortia and regulators focused on data standardization and compliance
Practical benefits include improved compression efficiency, lower network latency for genomic transfers, fast selective access for specific analyses, clearer separation of free-text metadata from core genomic data, and built-in mechanisms for secure sharing.
Related standards and references
- ISO/IEC 23092 series (other parts cover compression, decoding and APIs) - see ISO/IEC 23092-2 for decoder definitions referenced by this part.
- Common genomic formats and interoperability points: FASTA, FASTQ, SAM/BAM/CRAM (contextual comparison).
- Annex references such as IETF RFC 3986 (URI syntax) for transport-related considerations.
Keywords: ISO/IEC 23092-1:2020, genomic information representation, genomic data transport, genomic data storage, access unit, genomic record, selective access, compression, HTS, interoperability.