Probably nobody among the FTDNA tested individuals had the Z131+ until now. I have found that an STR haplotype of one of the three Genome 1000 tested people with Z131+ was already published on the DNA Forums Haplogroup I1 http://dna-forums.org/index.php?/topic/15714-z58-and-z63-under-i1-confirmed/ page__st__-20__p__26#entry26 , and earlier in an article http://www.plosone.org/article/info:doi/10.1371/journal.pone.0004684 I have uploaded the STR haplotype here http://medievalgenealogy.republika.pl/Z131+.PNG . This is rather an untypical haplotype. The subclade predictor shows: I-M253-1313 =>30% I-M253-EE =>30% I-M253-AS10 =>29% I belong to the subclade I1-P (I1-ASP), and we already have Z58- and Z63- in our subclade. We are just waiting on Z131 with the hope that finally this SNP will be positive for us. Nevertheless, the mentioned STR haplotype seems to be very distant from our subclade. Best, Marek Skarbek Kozietulski