| Contents | 5 |
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| PREFACE AND ACKNOWLEDGMENTS | 10 |
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| List of Contributing Speakers | 12 |
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| Immune-Mediated Diseases | 21 |
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| 1 Immune-Mediated Diseases: Where Do We Stand? | 22 |
| 1. Immune-Mediated Diseases: Diversity | 22 |
| 2. Immune-Mediated Diseases: Statistics | 24 |
| 3. Immune-Mediated Diseases: Correlations | 26 |
| 4. Concluding Remarks | 29 |
| References | 29 |
| Immunodeficiencies: News and Updates | 32 |
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| 2 The Four Most Common Pediatric Immunodeficiencies | 33 |
| 1. Transient Hypogammaglobulinemia of Infancy | 33 |
| 1.1. Definition and History | 33 |
| 1.2. Etiology | 34 |
| 1.3. Clinical Features | 34 |
| 1.4. Laboratory Features | 35 |
| 1.5. Management and Prognosis | 35 |
| 2. IgG Subclass Immunodeficiency | 35 |
| 2.1. Definition and History | 35 |
| 2.2. Etiology | 36 |
| 2.3. Clinical Features | 36 |
| 2.4. Laboratory Features | 37 |
| 2.5. Management and Prognosis | 37 |
| 3. Impaired Polysaccharide Responsiveness | 38 |
| 3.1. Definition and History | 38 |
| 3.2. Etiology | 38 |
| 3.3. Clinical Features | 39 |
| 3.4. Laboratory Features | 39 |
| 3.5. Treatment and Prognosis | 39 |
| 4. Selective IgAD Deficiency | 40 |
| 4.1. Definition and History | 40 |
| 4.2. Etiology | 40 |
| 4.3. Clinical Features | 41 |
| 4.4. Laboratory Features | 41 |
| 4.5. Treatment and Prognosis | 41 |
| 5. Conclusions | 42 |
| References | 42 |
| 3 Immune Dysregulation, Polyendocrinopathy, Enteropathy, X-Linked Inheritance: Model for Autoaggression | 45 |
| 1. Introduction | 45 |
| 2. Clinical and Pathologic Manifestations of IPEX | 46 |
| 2.1. Gastrointestinal Symptoms and Failure to Thrive | 46 |
| 2.2. Autoimmune Endocrinopathy | 47 |
| 2.3. Autoimmune Hematologic Disorders | 47 |
| 2.4. Dermatologic Abnormalities | 47 |
| 2.5. Infections | 47 |
| 2.6. Other Clinical Manifestations | 48 |
| 2.7. Laboratory Findings and Histopathology | 48 |
| 3. Molecular Basis of IPEX | 48 |
| 4. Function of FOXP3 | 49 |
| 5. Foxp3 and Treg Cells | 50 |
| 6. Fox Mutation Analysis in Patients with the IPEX Phenotype | 50 |
| 7. Diagnoses and Treatment of IPEX | 51 |
| 8. Animal Models | 51 |
| 9. Conclusions | 52 |
| References | 52 |
| 4 DiGeorge Syndrome/Velocardiofacial Syndrome: The Chromosome 22q11.2 Deletion Syndrome | 55 |
| 1. Nomenclature | 55 |
| 2. Genetics | 56 |
| 3. Management | 58 |
| 4. Conclusions | 62 |
| References | 62 |
| 5 Leukocyte Adhesion Deficiencies: Molecular Basis, Clinical Findings, and Therapeutic Options | 68 |
| 1. Introduction | 68 |
| 2. Leukocyte Adhesion Deficiency I | 69 |
| 3. Leukocyte Adhesion Deficiency II | 72 |
| 4. Leukocyte Adhesion Deficiency III | 74 |
| 5. Conclusions | 75 |
| References | 75 |
| 6 Nijmegen Breakage Syndrome | 78 |
| 1. Introduction | 78 |
| 2. Genetic Basis for NBS | 79 |
| 3. Clinical Presentation and Therapy | 80 |
| 4. Data from Russian Clinical Children s Hospital | 81 |
| References | 82 |
| 7 Neutrophil Activity in Chronic Granulomatous Disease | 85 |
| 1. Introduction | 85 |
| 2. Experimental Procedures | 86 |
| 3. Results | 87 |
| 3.1. Analysis o
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