GDCprepare duplication error in R

Question

[IK_Afif]

Hi there

I am facing a problem during preparing my RNA-seq data with GDCprepare. It is saying there are duplicated data in the download. How can I remove the duplicated data and proceed my work?

GDCprepare(query_rseq_PRAD,
                             save = TRUE,
                             summarizedExperiment = TRUE,
                             save.filename = "PRAD_Illumina_HiSeq.rda")


|    |tags                           |cases                        |experimental_strategy |
|:---|:------------------------------|:----------------------------|:---------------------|
|401 |unnormalized, gene        , v2 |TCGA-HC-7740-01B-04R-2302-07 |Total RNA-Seq         |
|450 |unnormalized, gene        , v2 |TCGA-HC-7740-01B-04R-2302-07 |Total RNA-Seq         |
|9   |unnormalized, gene        , v2 |TCGA-HC-8258-01B-05R-2302-07 |Total RNA-Seq         |
|497 |unnormalized, gene        , v2 |TCGA-HC-8258-01B-05R-2302-07 |Total RNA-Seq         |
|173 |unnormalized, gene        , v2 |TCGA-HC-8261-01B-05R-2302-07 |Total RNA-Seq         |
|246 |unnormalized, gene        , v2 |TCGA-HC-8261-01B-05R-2302-07 |Total RNA-Seq         |
|232 |unnormalized, gene        , v2 |TCGA-HC-8265-01B-04R-2302-07 |Total RNA-Seq         |
|413 |unnormalized, gene        , v2 |TCGA-HC-8265-01B-04R-2302-07 |Total RNA-Seq         |
Error in GDCprepare(query_rseq_PRAD, save = TRUE, summarizedExperiment = TRUE,  : 

There are samples duplicated. We will not be able to prepare it