a$newname <- paste(a$SNP, a$GENE)
manhattan(a, chr="CHR", bp="BP", snp="newname", p="P",annotatePval = 0.0001)

However note that I do not use manhattan() so you may need to alter the parameters as I am assuming a is where it finds the remaining parameters.

You may also need to play with the sep =, and collapse = parameters to paste() to get the precise layout you want.

Michael

On 19/05/2020 17:21, Ana Marija wrote:
Hi Michael,

can you please send me code how that would be done?

Thanks
Ana

On Tue, May 19, 2020 at 11:18 AM Michael Dewey <li...@dewey.myzen.co.uk> wrote:

Dear Ana

Perhaps paste together SNP and GENE using paste() and then supply that
as the snp parameter.

Michael

On 19/05/2020 17:12, Ana Marija wrote:
Hello,

I am making manhattan plot with:
library(qqman)
manhattan(a, chr="CHR", bp="BP", snp="SNP", p="P",annotatePval = 0.0001)

and I would like to annotate these two SNPs which are above the
threshold so that they have GENE name beside them:

a[a$SNP=="rs4081570",]
          SNP            P CHR       BP GENE
1 rs4081570 6.564447e-05  19 15918647 UCA1
a[a$SNP=="rs11867934",]
              SNP            P CHR       BP GENE
1021 rs11867934 6.738066e-06  17 16933404 FLCN

Right now my plot only has SNP name for those 2, how to add GENE names
(FLCN and UCA1 as well)

Please advise
Ana



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--
Michael
http://www.dewey.myzen.co.uk/home.html


--
Michael
http://www.dewey.myzen.co.uk/home.html

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