About a year ago I reiterated a point made nicely in a Nature Reviews Genetics article, that there is no such thing as a common disorder - only extremes of quantitative traits. Such is the theme of this year's Annual Vanderbilt Genetics Symposium, "Beyond Disease Dichotomy - Quantitative Traits and Intermediate Phenotypes." This is a day-long event held at the Vanderbilt Student Life Center on Wednesday October 13, 8am-4pm.

Frank Harrell, chair of our Biostats department, will be giving a seminar entitled "Towards a More Rigorous Approach to Personalized Medicine." As a champion of methods and strategies for reproducible research, Dr. Harrell's lecture on personalized medicine should be interesting.

I recently reformatted my laptop and needed to reinstall R and all the packages that I regularly use. In a previous post I covered R Commander, a nice GUI for R that includes a decent data editor and menus for graphics and basic statistical analysis.

Will Bush and I just heard that our paper "Multivariate Analysis of Regulatory SNPs: Empowering Personal Genomics by Considering Cis-Epistasis and Heterogeneity" was accepted for publication and a talk at the Personal Genomics session of the 2011 Pacific Symposium in Biocomputing.

Note 2010-11-17: there's more than one way to do this.

Rebecca Skloot, author of bestselling The Immortal Life of Henrietta Lacks (Amazon, $14), will be speaking here at Vanderbilt next Tuesday at noon in 208 Light Hall. This is one you don't want to miss. Be sure to get there a few minutes early. When 208 fills up they'll have overflow in 202 with a live webcast. RSVP to jane...@vanderbilt.edu for a free lunch.

A few weeks ago I suddenly reached the point that every graduate student once thought would never come - time to start writing my thesis. With a blank page and a blinking cursor staring me in the face it's time to compile all of my published and unpublished work I've accumulated over the last few years and wordsmith this pile of papers and results into a single cohesive unit.

Last Year I introduced you to R Commander, a nice graphical user interface (GUI) for R for those of you who are still hesitant to leave the clicky-box style research a la SPSS for the far more superior reproducible research using R. As most of you know I'm a huge fan of ggplot2. Many of you came to the short course Hadley Wickham gave here a few weeks ago on ggplot2 and plyr.

Last year I linked to a series of perspectives in NEJM with contrasting views on the success or failure of GWAS - David Goldstein's paper and Nick Wade's synopsis that soon followed in the New York Times being particularly pessimistic. Earlier this year I was swayed by an essay in Cell by Jon McClellan and Mary-Claire King condemning the common disease common variant hypothesis and chalking up most GWAS hits to population stratification.

Lucila Ohno-Machado, Professor of Medicine and Chief of the Division of Biomedical Informatics at UC-San Diego, will be giving a talk on "Accuracy of Individualized Risk Estimates for Personalized Medicine" next week, August 18, noon-1pm in 202 Light Hall. This should be an interesting perspective from a scientist with medical training on the utility of personal genomics tools in making healthcare decisions.

Aviad Klein over at My ContRibution wrote a convenient R function to list the classes of all the vectors that make up a data.frame. You would think apply(kyphosis,2,class) would do the job but it doesn't - it calls every vector a character class. Aviad wrote an elegant little function that does the job perfectly without having to load any external package: