ABMGG Medical Biochemical Genetics study guide
ABMGG Medical Biochemical Genetics · Work through your exam, one topic at a time.
Medical Biochemical Genetics is a subspecialty certification offered by the American Board of Medical Genetics and Genomics (ABMGG), an organization whose stated mission is "to serve the public and medical profession by establishing professional certification standards and promoting lifelong learning as well as excellence in medical genetics and genomics." The credential is intended for physicians who have completed genetics training and wish to demonstrate subspecialty competence in inherited metabolic disease. This independent study resource is organized around six domains: biochemical genetics; inborn errors of metabolism; metabolic laboratory testing and newborn screening; clinical management and treatment of metabolic disorders; genetic and genomic principles; and counseling, ethics, and professionalism. The ABMGG Medical Biochemical Genetics study guide has 6 sections and about 1,688 words.
01Biochemical Genetics
This domain tests the core principles of how genetic defects produce metabolic disease: enzyme kinetics, pathway logic, and the biochemical consequences of a block. Candidates must understand concepts such as Km and Vmax, the effect of mutations on enzyme activity (loss-of-function, gain-of-function, dominant-negative), and how these relate to residual enzyme activity and clinical severity.
281 words, about 1 min02Inborn Errors of Metabolism
This domain covers the clinical presentation and pathophysiology of specific metabolic disorders. You must know the major categories: aminoacidopathies, organic acidemias, fatty acid oxidation defects, urea cycle disorders, lysosomal storage diseases, peroxisomal disorders, and mitochondrial disorders.
288 words, about 1 min03Metabolic Laboratory Testing and Newborn Screening
This domain focuses on the appropriate use and interpretation of laboratory tests in metabolic genetics. You must know the principles of newborn screening (NBS), including tandem mass spectrometry (MS/MS) for amino acids and acylcarnitines, and the limitations of screening (false positives/negatives, premature infants, maternal conditions).
288 words, about 1 min04Clinical Management and Treatment of Metabolic Disorders
This domain tests the acute and chronic management of patients with metabolic disorders. You must know the principles of emergency treatment for metabolic crises: stabilization, stopping protein intake, providing calories (e.g., IV glucose), correcting acidosis and hyperammonemia, and using specific therapies (e.g., sodium benzoate/phenylacetate for urea cycle disorders, carnitine for organic acidemias).
275 words, about 1 min05Genetic and Genomic Principles
This domain covers the genetic basis of metabolic disorders: inheritance patterns (autosomal recessive, X-linked, mitochondrial), mutation types, and the use of genetic testing (e.g., targeted mutation analysis, gene panels, exome sequencing). You must understand concepts such as penetrance, variable expressivity, genetic heterogeneity, and genotype-phenotype correlations.
260 words, about 1 min06Counseling, Ethics, and Professionalism
This domain addresses the non-laboratory aspects of metabolic genetics practice: genetic counseling, ethical dilemmas, and professional conduct. You must understand the principles of informed consent, confidentiality, duty to warn (e.g., for preventable disorders), and the psychosocial impact of metabolic disorders on families.
296 words, about 1 min