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Gene Expression Profiles in CML Non-responders

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Status
Sponsor
Sheffield Children's NHS Foundation Trust

Kata kunci

Abstrak

Chronic myeloid leukaemia (CML) is a haematological malignancy primarily driven by the fusion oncogene BCR-ABL1, resulting in a constitutively expressed tyrosine kinase. CML is treated very effectively by the tyrosine kinase inhibitors (TKIs) resulting in almost undetectable levels of disease. However, some patients show resistance to first line treatment, requiring second and third generation TKIs. Such resistance is due to the presence of tyrosine kinase domain (TKD) mutations, however TKDs do not appear to be present in all patients who do not respond to treatment.
The aim of this project is to utilise gene expression arrays to identify transcriptomic profiles associated with resistance to TKIs in the absence of a demonstrable TKD mutation. The presence of such profiles may allow for a more targeted approach to treatment, if non-responders can be identified earlier in the disease management pathway. Being able to predict those that will not respond to first line treatment will allow for better stratification of patients.

Deskripsi

The aim of this project is to use gene expression microarrays to detect expression profiles which may be associated with TKI resistance in order to better stratify CML patients and allow a more targeted approach to therapy. The project may also help elucidate the mechanism of resistance in those without a discernible TKD mutation. Ultimately it is hoped that this would lead to larger studies which could improve the clinical pathway for CML patients without TKD mutations.

Some previous studies have studied the gene expression profile of CML patients demonstrating resistance to TKIs, using Affymetrix arrays. However, none of these appear to have specifically investigated non-responders with and without a TKD mutation.

tanggal

Terakhir Diverifikasi: 12/31/2019
Pertama Dikirim: 01/02/2020
Perkiraan Pendaftaran Telah Dikirim: 01/02/2020
Pertama Diposting: 01/05/2020
Pembaruan Terakhir Dikirim: 01/02/2020
Pembaruan Terakhir Diposting: 01/05/2020
Tanggal Mulai Studi Sebenarnya: 09/30/2017
Perkiraan Tanggal Penyelesaian Utama: 05/03/2018
Perkiraan Tanggal Penyelesaian Studi: 05/03/2018

Kondisi atau penyakit

Gene Expression Profiles in CML Non-responders

Intervensi / pengobatan

Genetic: Clariom

Tahap

-

Kriteria kelayakan

Usia yang Layak untuk Belajar 17 Years Untuk 17 Years
Jenis Kelamin yang Layak untuk BelajarAll
Metode pengambilan sampelNon-Probability Sample
Menerima Relawan SehatIya
Kriteria

Inclusion Criteria:

- CML patients with poor response to TKIs as identified through routine clinical testing at SDGS, either with or without a tyrosine kinase domain mutation as tested for by mutational analysis.

Exclusion Criteria:

- Any samples that do not meet the above inclusion criteria, but particularly not CML patients with an optimal response to TKIs.

Hasil

Ukuran Hasil Utama

1. Success identification of at least 5 markers of resistance in patients without a TKD mutation and confirmation of their expression levels using qPCR [2 months]

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