2010 Summer Program on Semiparametric Bayesian Inference: Applications in Pharmacokinetics and Pharmacodynamics

Workshop Information

Description of Activities

The program began with a week of tutorials and workshop activities. There were extended, tutorial-style talks during morning sessions, and contributed and invited research talks during the afternoons. Afternoon talks were selected to complement topics covered in the morning sessions.

At the end of the first week workshop research working groups were  formed. The working groups tackled particular research problems in the area. Working group activities included workshop-style presentations by group members to stimulate discussion on specific issues. Themes for the working groups and workshop sessions:

  • semi-parametric population PK/PD models
  • dose individualization
  • probability models for PK/PGx networks
  • joint inference for PK and PD data

Schedule

Monday, July 12, 2010
Radisson RTP

Tutorials

8:00-8:45 a.m. Registration and Continental Breakfast
8:45-9:00 Welcome & Overview
9:00-10:45 Tutorial 1
Wes Johnson, Univ. of California-Irvine and David Dunson, Duke University
Bayesian Nonparametrics: An Overview
10:45-11:15 Break
11:15-12:30 Tutorial 1, continued
12:30-1:30 Lunch
1:30-3:00 Tutorial 2
David D'Argenio, University of Southern California and Paolo Vicini, Pfizer
Pharmacokinetics (PK) and Pharmacodynamics (PD)
3:00-3:30 Break
3:30-5:00 Tutorial 2, continued

Tuesday, July 13, 2010
Radisson RTP

Opening Workshop

8:00-9:00 a.m. Registration and Continental Breakfast
9:00-Noon Prior Elicitation and Construction
9:00-9:45 Wes Johnson, Univ. of California-Irvine
On the Value of Incorporating Scientific Input in Modeling and Data Analysis, and How to Do it Without (too much) Pain
9:45-10:30 Peter Thall, MDACC
Prior Elicitation in Bayesian Clinical Trial Design
10:30-11:00 Break
11:00-11:45 Siva Sivaganesan, University of Cincinnati
Sample Size: How Many Subjects
11:45-12:00 Discussion
Noon-1:00 Lunch
1:00-2:30 Lang Li, Indiana University and Paolo Vicini, Pfizer
Identifiability and Prior Regularization: A PK-PD Modeling View
2:30-3:00 Break
3:00-3:45 Robert Leary, Pharsight
Computational Challenges of Nonlinear Mixed Effects Analysis for PK/PD Modeling
3:45-4:30 Sujit Ghosh, N.C. State University
Application of Nonlinear Mixed Models Involving ODEs
4:30-5:00 Discussion

Wednesday, July 14, 2010
Radisson RTP

8:00-9:00 a.m. Registration and Continental Breakfast
9:00-Noon Joint PK and PD
9:00-9:45 Wojciech Krzyzanski, State University of New York
PD/PD Modeling of Therapeutic Effects of Erythropoietin
9:45-10:30 Michele Guidani, University of New Mexico
NP Bayes Functional Regression for a PK/PD Semi-Mechanistic Model
10:30-11:00 Break
11:00-11:45 Thanasis Kottas, Univ. of California-Santa Cruz
A Bayesian Nonparametric Modeling Approach for Developmental Toxicology Data
11:45-12:00 Discussion
Noon-1:00 Lunch
1:00-2:30 David Conti, University of Southern California; Duncan Thomas, University of Southern California
Bayesian Hierarchical and PD/PK Modeling for Complex Pathways in Molecular Epidemiology
2:30-3:00 Mike Reed, Duke University
Why Metabolism is a Challenge for Statistical Analysis: the Case of Substrate Inhibition
3:00-3:30 Break
3:30-4:15 Peter Mueller, MD Anderson
Nonparametric Bayesian Models for Population PK/PD
4:15-5:00 Donatello Telesca, Univ. of California-Los Angeles
Modeling Pk/PGx Data
5:00-5:30 Discussion

Thursday, July 15, 2010
Radisson RTP

8:00-8:45 a.m. Registration and Continental Breakfast
9:00-12:30 DDP, Mixture Models and Related Models
9:00-9:45 Subharup Guha, University of Missouri
Posterior Simulation in Countable Mixture Models for Large Data Sets
9:45-10:30 Steve MacEachern, Ohio State University
Nonparametric Bayesian Models for Related Subpopulations
10:30-11:00 Break
11:00-11:45 Maria de Iorio, Imperial College
Nonparametric Approaches for Heterogeneous Longitudinal Data
11:45-12:30 Tatiana Tatarinova, University of Glamorgan
Analysis of Biological Time Series Data in Data-Rich Situations
12:30-1:30 Lunch
1:30-2:10 Roger Jelliffe, University of Southern California
Tools for Individualizing Drug Dosage Regimens for Patients
2:10-2:50 William Gillespie, Metrum Institute
Examples of Decison-Focused Modeling and Simulation in Clinical Drug Development and Some Methodology R&D Opportunities They Suggest
2:50-3:30 Gary Rosner, Johns Hopkins University
Optimal Design with Bayesian Nonparametric Priors
3:30-4:00 Break
4:00-5:00 David D'Argenio, University of Southern California; William Gillespie, Metrum Institute; Roger Jelliffe, University of Southern California; Bob Leary, Pharsight
Implementation and Available Software
5:00-5:30 Poster Advertisement Session: 2 minute ads by each poster presenter
6:00-8:00 Poster Session and Reception

SAMSI will provide poster presentation boards and tape. The board dimensions are 4 ft. wide by 3 ft. high. They are tri-fold with each side being 1 ft. wide and the center 2 ft. wide. Please make sure your poster fits the board. The boards can accommodate up to 16 pages of paper measuring 8.5 inches by 11 inches.
8:00- Informal Debate: Parametric PD Models vs. Nonparametric PD Models

Friday, July 16, 2010
Radisson RTP

8:00-9:00 a.m. Registration and Continental Breakfast
9:00-12:15 Nonparametric Bayes and Clustering for Random Effects Distributions:
9:00-9:45 David Dahl, Texas A&M University
Strategies for Incorporating Prior Information in Random Partition Models with Examples
9:45-10:30 Mahlet Tadesse, Georgetown University
Stochastic Partitioning and Model-based Clustering with Variable Selection
10:30-11:00 Break
11:00-11:45 Julien Cornebise, University of British Columbia
 Inference for Mixed Effects Stochastic Differential PKPD Models with Particle MCMC
11:45-12:15 Gary Rosner, Johns Hopkins University and Peter Mueller, University of Texas
Summary and Discussion
12:15-1:30 Lunch
1:30-2:30 Formation of Working Groups
2:30-3:00 Break
3:00-4:00 Initial Discussions

Monday, July 19 - Thursday, July 22
SAMSI, RTP, Rooms 104, 150, 201, 203, 259

Monday, July 19
William Gillespie, Metrum Institute
Part II of Examples of Decison-Focused Modeling and Simulation in Clinical Drug Development and Some Methodology R&D Opportunities They Suggest

Tuesday, July 20
Susie Bayarri, University of Valencia
Dealing with Uncertainty in Mechanistic Models 101

Working Groups
Themes:

  1. Identifiability and Prior Regularization
  2. Joint PK and PD Modeling
  3. PK/PD Simulation for Design and Dose Individualization
  4. Pharmacogenomics and Networks
  5. Nonparametric Bayes and Clustering for PK and PD Population Analysis
12:00-1:30 Lunch

Friday, July 23
SAMSI

9:30-12:00 Presentations by working groups and discussion about future projects
12:00-1:30 Lunch
1:30 Adjourn