CMSA Cert Allergology(SA) Phys Practice Questions - CMSA Sub-specialty Certificate in Allergology Cert Allerg(SA) Phys - South Africa Exam - CMSA Cert Allergology(SA) Phys Practice Questions - CMSA Sub-specialty Certificate in Allergology Cert Allerg(SA) Phys

Question 1

Following allergen-mediated cross-linking of membrane-bound IgE on mast cells, which immediate intracellular signaling event initiates the phosphorylation cascade of the high-affinity IgE receptor (FcεRI)?

Direct binding of Janus kinase 2 (JAK2) to the unphosphorylated α subunit cytoplasmic tail Cleavage of membrane phosphatidylinositol 4,5-bisphosphate (PIP2) by phospholipase C gamma 1 (PLCγ1) without upstream kinase activity Activation of the receptor-associated Src-family tyrosine kinase Lyn, which phosphorylates ITAM motifs on β and γ subunits Dephosphorylation of the γ subunit by SHP-1 protein tyrosine phosphatase

Correct Answer:

Activation of the receptor-associated Src-family tyrosine kinase Lyn, which phosphorylates ITAM motifs on β and γ subunits

Question 2

A 28-year-old female presents with severe seasonal allergic rhinitis. Immunological evaluation reveals naive CD4+ T cell differentiation biased toward the Th2 lineage. Which cytokine and transcription factor combination is uniquely responsible for driving Th2 cell commitment?

IL-4 signaling through STAT6 to induce GATA-3 transcription factor expression IL-12 signaling through STAT4 to induce T-bet transcription factor expression IL-27 signaling through STAT1 to induce Eomesodermin expression IL-6 and TGF-β signaling through STAT3 to induce RORγt expression

Correct Answer:

IL-4 signaling through STAT6 to induce GATA-3 transcription factor expression

Question 3

During an acute allergic reaction, mast cells release both preformed granule mediators and newly synthesized lipid mediators. Which pair of mediators represents newly synthesized lipid products derived from arachidonic acid breakdown?

Tumor Necrosis Factor alpha (TNF-α) and Carboxypeptidase A3 Leukotriene C4 (LTC4) and Prostaglandin D2 (PGD2) Heparin and Chymase Histamine and Beta-tryptase

Correct Answer:

Leukotriene C4 (LTC4) and Prostaglandin D2 (PGD2)

Question 4

According to the revised Gell and Coombs classification of hypersensitivity reactions, which mechanism correctly pairs a severe adverse drug reaction with its underlying immunological subtype?

Drug Reaction with Eosinophilia and Systemic Symptoms (DRESS) — Type IVb hypersensitivity mediated by Th2 cells, IL-4, IL-5, and eosinophils Serum Sickness — Type IVc hypersensitivity mediated by cytotoxic CD8+ T cells releasing perforin and granzyme B Acute Generalized Exanthematous Pustulosis (AGEP) — Type I IgE-mediated anaphylactic degranulation of basophils Stevens-Johnson Syndrome (SJS) — Type II antibody-dependent cell-mediated cytotoxicity mediated by NK cells and IgG antibodies

Correct Answer:

Drug Reaction with Eosinophilia and Systemic Symptoms (DRESS) — Type IVb hypersensitivity mediated by Th2 cells, IL-4, IL-5, and eosinophils

Question 5

A 32-year-old male presents with recurrent episodes of unprovoked non-pruritic abdominal pain and facial swelling without urticaria. Laboratory evaluation reveals C4 < 5 mg/dL. Which combination of test results confirms Hereditary Angioedema Type II as opposed to Type I?

Low C1-INH antigenic protein level with proportionally low C1-INH functional activity Elevated factor XII activity with normal C4, normal C1-INH antigen, and normal C1-INH function Low C1q antigenic level with normal C1-INH antigenic level and normal C1-INH function Normal or elevated C1-inhibitor (C1-INH) antigenic protein level with low C1-INH functional activity

Correct Answer:

Normal or elevated C1-inhibitor (C1-INH) antigenic protein level with low C1-INH functional activity

Question 1

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Prepare with the CMSA Cert Allergology(SA) Phys Practice Questions - CMSA Sub-specialty Certificate in Allergology Cert Allerg(SA) Phys - South Africa Exam practice quiz. This question bank includes 100 questions covering year-old, severe, asthma, presents, and allergic. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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CMSA Cert Allergology(SA) Phys Practice Questions - CMSA Sub-specialty Certificate in Allergology Cert Allerg(SA) Phys - South Africa Exam

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CMSA Cert Allergology(SA) Phys Practice Questions - CMSA Sub-specialty Certificate in Allergology Cert Allerg(SA) Phys - South Africa Exam

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