This publication updates the now classic system of human cytogenetic nomenclature prepared by an expert committee and published in collaboration with Cytogenetic and Genome Research (formerly: Cytogenetics and Cell Genetics) since 1963.

Revised and finalized by the ISCN Committee and its advisors at a meeting in Vancouver, B.C., in October 2008, the ISCN 2009 updates, revises and incorporates all previous human cytogenetic nomenclature recommendations into one systematically organized publication that supersedes all previous ISCN recommendations.

What is new in ISCN 2009?
– New idiograms at all band levels have been revised based upon higher-resolution analysis of banded chromosomes
– The neoplasia nomenclature has been revised to allow the use of idem or stemline/sideline notation to describe clonal evolution
– New examples reflecting unique situations are included in most chapters
– The nomenclature for microarray results has been revised to accommodate any platform and provides detailed and short systems of description
– A nomenclature for MLPA results has been introduced

ISCN 2009 is thus an indispensable reference for human cytogeneticists, technicians and students for the interpretation and communication of human cytogenetic nomenclature.