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RETRACTED ARTICLE: The association of Crk-like adapter protein with poor prognosis in glioma patients

  • Research Article
  • Published:
Tumor Biology

This article was retracted on 20 April 2017

Abstract

Glioma is the most common of brain tumors that greatly affects patient survival. In our precious study, Crk-like adapter protein (CrkL) was identified as a key regulator in glioblastoma development [1]. Here, we aimed to investigate the correlation of CrkL with patient prognosis as well as pathological indicators. Immunohistochemistry was available to evaluate CrkL expression in 49 gliomas of distinct malignancy grade, and positive stained sites were analyzed. CrkL protein was detected in cell lines by Western blot as well. We observed CrkL protein stained in 59.2 % (29 out of 49) of all glioma tissues, including 41.4 % of low-grade (I + II) gliomas, and 85.0 % of high-grade (III + IV) gliomas. Of four grades, grade IV exhibited the highest CrkL level. CrkL protein was also identified in cell lines NHA, U87, U251, T98G, and A172 by Western blot. On the other hand, CrkL expression was significantly associated with the patient’s age and WHO grade, and patients with high CrkL expression had a significantly shorter median survival time (17 months) than those (median survival time 52 months) with low CrkL expression (p < 0.001). According to Cox regression, CrkL can be suggested as an independent prognostic factor. In conclusion, CrkL is differently expressed in different grades of gliomas, and correlated to WHO grade. CrkL also independently indicates poor prognosis in old glioma patients, which can further be recommended as an effective prognostic biomarker or therapeutic target.

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Acknowledgments

This study was supported by the National Key Basic Research Program of China (No. 2013CB932502), and the National Natural Science Foundation of China (No. 81171295). We greatly thank Ranran Shi in Sandy Lab for valuable suggestions.

Conflicts of interest

The authors state that there are no conflicts of interest to disclose.

Author information

Authors and Affiliations

  1. Neurological Surgery Department, Glioma Surgery Division, Huashan Hospital, Shanghai Medical College, Fudan University, 12#, WulumuqiZhong Road, Shanghai, 200040, China

    Chengjun Yao, Dongxiao Zhuang & Jinsong Wu

  2. Department of Neurosurgery, Qilu Hospital of Shandong University and Brain Science Research Institute, Shandong University, Jinan, Shandong, China

    Shunzeng Lv, Mingzhi Han & Li Zhang

  3. The First Clinical College of Nanjing Medical University, Nanjing, China

    Jie Zhang

  4. Department of Neurosurgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China

    Shunzeng Lv, Jie Zhang & Li Zhang

  5. Department of Hematology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, China

    Ya Zhang

  6. Biological Sciences Division, University of Chicago, Chicago, IL, USA

    Ruiyang Yi

Authors
  1. Chengjun Yao
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  2. Shunzeng Lv
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  3. Mingzhi Han
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  4. Jie Zhang
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  5. Ya Zhang
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  6. Li Zhang
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  7. Ruiyang Yi
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  8. Dongxiao Zhuang
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  9. Jinsong Wu
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Corresponding author

Correspondence to Jinsong Wu.

Additional information

The Publisher and Editor retract this article in accordance with the recommendations of the Committee on Publication Ethics (COPE). After a thorough investigation we have strong reason to believe that the peer review process was compromised.

An erratum to this article can be found online at http://dx.doi.org/10.1007/s13277-017-5487-6.

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Yao, C., Lv, S., Han, M. et al. RETRACTED ARTICLE: The association of Crk-like adapter protein with poor prognosis in glioma patients. Tumor Biol. 35, 5695–5700 (2014). https://doi.org/10.1007/s13277-014-1754-y

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  • DOI: https://doi.org/10.1007/s13277-014-1754-y

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