Chronological Table

Year Date Who Event Details
2014 1/28 RIKEN Press release of STAP papers Participants: Obokata, Sasai, and Wakayama
| 1/29 Nature published two STAP papers (Obokata et al., Article and Letter) Article/Letter
| 2/18 RIKEN set up the 1st. Fraud Investigation Committee on the STAP papers based on a contact to RIKEN's hotline on research frauds at 2/13
| 3/5 Endo (aka kaho) published "On the non-existence of STAP cells" @Srad blog; based on ChIP-data published by Obokata et al. on the public database
| 3/5 Nature Niwa and other authors of STAP papers published detailed STAP protocol in PROTOCOL EXCHANGE Protocol; "Of eight clones examined, none contained the rearranged TCR allele, ..."
| 3/9 Anonymous reported that teratoma data in the STAP article was the copy of data in Obokata's PhD thesis for pre-STAP experiments
| 3/10 Wakayama published "On the problems in the STAP papers" @Yamanashi University web site (archive [J])
| 3/14 RIKEN 1st. Fraud Investigation Committee published their intermediate report Ishii Report (1/2)
| 4/1 RIKEN 1st. Fraud Investigation Committee published their final report Ishii Report (2/2)(J) (E)
| 4/9 Obokata held her press conference "STAP is real.", "I have created STAP cells for about 200 times."
| 4/16 Sasai held his press conference Handout; "data that cannot be explained without the existence of STAP phenomenon"
| 4/25 RIKEN The chairperson of the 1st. Fraud Investigation Committee was replaced (Ishii -> Watanabe) due to possible fraud in Dr. Ishii's papers
| 5/8 RIKEN 1st. Fraud Investigation Committee rejected Obokata's protest to their final report Decisions (J) (E)
| 6/16 Wakayama held his press conference Gene analysis of STAP stem cells by 3rd-party investigators
| 7/1 RIKEN started Scientific Re-investigation of STAP Phenomenon
| 7/3 Nature Two STAP papers are retracted by the authers Retraction; "Multiple errors impair the crebility of the study"
| 7/22 Wakayama corrected the the results of gene analysis of STAP stem cells by 3rd-party investigators Corrections
| 7/27 NHK broadcast "Investigation: The Depth of the STAP Cell Fraud"
| 8/5 Sasai killed himself @IBRI next to RIKEN CDB
| 12/19 RIKEN reported the results of the Scientific Re-investigation of STAP Phenomenon Reports; Obokata resigned from RIKEN CDB.
| 12/26 RIKEN 2nd. Fraud Investigation Committee published their report Katsura Report (J) (E)
| 12/30 Suda published her book "Faking Scientists -- the STAP Cell Scandal" from Bunshyun publishing
2015 1/15 RIKEN registered NGS data of STAP related cells in the public database Notice
| 2/10 RIKEN subjected Obokata to dsciplinary dismissal and Wakayama to attendance stop Dicisions
| 9/24 Nature "STAP cells are derived from ES cells" Brief Communication Arising
| 9/24 Nature "Failure to replicate the STAP cell phenomenon" Brief Communication Arising
2016 1/28 Obokata published her personal note "That Day" from Koudan-sha publishing
| 3/25 Obokata opened a web page "STAP HOPE PAGE" http://stap-hope-page.com/
| 5/18 Accusation from Ishkawa for stealing ES cells in RIKEN CDB was dropped by the prosecutor @Kobe
| 6/1 Aizawa "Results of an attempt to reproduce the STAP phenomenon [version 1; referees: 2 approved]" F1000Research; "the injected cells mande no significant contribution in any tissue in any of the embryos that developed"; The summary of the Obokata part of the Scientific Re-investigation of STAP Phenomenon in RIKEN; Obokata is not listed in the author list because Aizawa has been unable to contact her since the completion of the study.
| 6/13 Niwa "Investigation of the cellular reprogramming phenomenon referred to as stimulus-triggered acquisition of pluripotency (STAP)" SCIENTIFIC REPORTS; "the STAP phenomenon as described in the original studies is not reproducible"; The summary of the Niwa part of the Scientific Re-investigation of STAP Phenomenon in RIKEN

RIKEN summary of STAP related pages