| 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) |
| | | 5/30 | Vacanti | sent a letter to Nature asking for a retraction of the STAP article paper | souce: http://blogs.nature.com/news/2014/06/last-remaining-support-for-controversial-stem-cell-papers-collapses.html |
| | | 6/3 | Obokata | agreeded to the retraction of the STAP article paper | |
| | | 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 |