International Nucleotide Sequence Database Collaboration (INSDC), consisted of DDBJ, EBI and NCBI, hold the international collaborators meeting every year.In 2011, the meeting was held at Osaka in Japan, 23-27 May, to discuss practical matters to maintain and update nucleotide sequence data archives; DDBJ, EMBL-Bank, GenBank, Sequence Read Archive (SRA) and Trace Archive.Though there were still aftermaths of the Great East Japan Earthquake, DDBJ could host ICM2011 with understanding and cooperation of NCBI and EBI.The outcomes of the meeting are summarized here.