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Case Reports
. 2017 May 30:21:171-175.
doi: 10.1016/j.rmcr.2017.05.013. eCollection 2017.

Re-biopsy after relapse of targeted therapy. T790M after epidermal growth factor mutation, where and why based on a case series

Affiliations
Case Reports

Re-biopsy after relapse of targeted therapy. T790M after epidermal growth factor mutation, where and why based on a case series

Paul Zarogoulidis et al. Respir Med Case Rep. .

Abstract

Guidelines for the treatment of non-small cell lung cancer adenocarcinoma positive in epidermal growth factor mutations indicate tyrosine kinase inhibitors. There are currently three tyrosine kinase inhibitors that can be used as first line treatment: gefitinib, erlotinib and afatinib. Regarding erlotinib and afatinib dosage can be modified in the case of severe adverse effects. In the case of disease relapse investigation for T790M mutation has to be made either with re-biopsy or liquid biopsy and osimertinib has to be administered when T790M is diagnosed. Based on a case series we indicate which is the best approach for T790M mutation.

Keywords: Adenocarcinoma; Erlotinib and afatinib; Gefitinb; NSCLC.

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Figures

Fig. 1
Fig. 1
Pleural effusion.
Fig. 2
Fig. 2
Lung lymphagiomatosis.
Fig. 3
Fig. 3
Lung lymphagiomatosis with mediastinal lymphnode enlargement.
Fig. 4
Fig. 4
Left lung mass ct biopsy.
Fig. 5
Fig. 5
Pleural effusion during medical thoracoscopy.
Fig. 6
Fig. 6
White arrow indicates pleural effusion, while red arrow lymph node.
Fig. 7
Fig. 7
Endobronchial ultrasound performed by Dr. Paul Zarogoulidis with a Pentax EB-1970UK lymph node 11 RS biopsy.
Fig. 8
Fig. 8
Left lung mass ct biopsy.
Fig. 9
Fig. 9
Disease relapse with lymph node number 7 enlargement (red arrow).
Fig. 10
Fig. 10
Endobronchial ultrasound performed by Dr. Paul Zarogoulidis with a Pentax EB-1970UK lymph node 7 biopsy.

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