nsolver p values for signature scores in pathways
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5.3 years ago
Pin.Bioinf ▴ 340

Hello,

my fellow biologist is using nsolver for analyzing nanostring data. One of the features of nsolver that she loves is it provides with signature scores for pathways and boxplots for these scores comparing sample types, scatter plots, etc.

The problem is: there is no confidence scores in these plots or these results, and she asked me to compute those confidence scores for her. How could I do so? I think nsolver uses pathifier or something similar to it, but I am not sure. Pathifier does not provide with p values either. What do you recommend? I downloaded the results from nsolver and they look like this:

    Cell Cycle - Apoptosis  Chromatin Modification  DNA Damage - Repair Driver Gene Hedgehog
    Sample1.RCC 6.874940011 1.575197879 3.019260549 4.410085616 3.165996225
    Sample2.RCC 0.797363391 -0.559763334    -0.63705548 1.31730206  -0.778248895
   Sample3.RCC  -2.252367228    -0.762525873    -0.931860336    -1.774930444    -0.667779337
   Sample4.RCC  -1.028090843    -0.05319562 -2.242034205    0.292504896 2.065701421

These are the signature scores. Then, I also have this information about in which pathways is located each gene :

    Log2 fold change    BONF.p.value    Gene.sets
FGF10-mRNA  -1.8    0.000191    MAPK, PI3K, Ras
CDC6-mRNA   1.25    0.00466 Cell Cycle - Apoptosis
PIK3CA-mRNA 0.461   0.0155  Cell Cycle - Apoptosis, Driver Gene, JAK-STAT, PI3K, Ras

Any ideas on how to get a confidence value for the signature scores? nanostring support said I should do a t-test, but I dont know how! using what data?

Thank you.

nsolver pathifier pathways nanostring pvalue • 1.4k views
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