Question 1
Question
All of the following are correctly matched except?
Answer
-
APCED - AIRE gene is affected - T cells react to self antigens (Central tolarence)
-
IPEX - FOX P3 is affected - Lack of Tregs - autoimmune - Peripheral tolarence
-
Chronic granulomatous Disease - gp91 gene - NADPH oxidase deficiency
-
Leucocyte adhesion deficiency - CD20 deficiency
Question 2
Question
All of the following lead to suspicion of an immunodeficiency in infants or children except
Answer
-
Needs for IV antibiotics and or hospitalization
-
2 or more serious sinus infections or pneumonias within a year
-
Recurrent or resistant candidasis
-
Infection with opportunistic organism
-
Resistant to viral infections
Question 3
Question
All of the following are defects in phagocytic cells except?
Answer
-
LAD (Leukocyte Adhesion Deficiency)
-
CGD (chronic granulomatous disease)
-
G6PD deficiency
-
Myeloperoxidase deficiency
-
Chediak-Higashi syndrome
-
None of the above
Question 4
Question
All of the following are seen in LAD except?
Answer
-
Recurrent viral infections
-
Elevated white blood count
-
autosomal recessive
-
Rebuck Skin window test and flow cytometric analyses show absence of CD18 are diagnostic
-
Absence of pus and delayed wound healing
Question 5
Question
For CGD dihydrorhodamine test (DHR) is more accurate than NBT
Question 6
Question
All of the following are correctly matched except?
Question 7
Question
all of the following are correctly matched except?
Answer
-
Paroxysmal Nocturnal Hemoglobinuria - DAF deficiency (CD55/CD59)
-
Hereditary Angioedema - C1 esterase deficiency
-
CH50 tests - alternate pathway and A50 tests - classic pathway
Question 8
Question
All of the following about Bruton's agammaglobulinemia are correct except?
Answer
-
X linked recessive transmission
-
Serum titers of IgM is not detectable, Iga and IgG are low
-
cannot handle measles infection
-
none of the above
-
Caused by mutation in btk gene (Bruton's tyrosine kinase)
Question 9
Question
X linked hyper IgM (XHIGM) - all of the following are true except?
Answer
-
a B cell defect
-
CD 40 L is deficient
-
None of the above
Question 10
Question
All of the following for selective IgA deficiency are true except?
Answer
-
Most common immunodeficiency in European descent
-
Only mucosal IgA is absent and serum is normal
-
none of the above
-
Some patients when transfused with blood containing normal IgA develop severe even fatal anaphylactic reaction because they have made IgE anti-IgA antibodies
Question 11
Question
IN CVID the roles in B and plasma cell survival and isotype switch is common due to a defect in TACI
Question 12
Question
all of the following are true about Di George syndrome except
Answer
-
Autosomal dominant inheritance
-
Deletion of 22q11
-
Hypercalcemia
-
Low set ears, underdeveloped jaw, small mouth, abnormally increased distance between the eyes
Question 13
Question
All of the following are true about Bare Lymphocytes syndrome (BLS) except?
Question 14
Question
All the following statements are true except?
Answer
-
ADA deficiency - has NO T,B, NK cell
-
PNP deficiency - No T cells
-
X linked SCID - No T cells
-
Autosomal SCID - NO T or B cells
Question 15
Question
All of the following about X- linked SCID are true except?
Answer
-
LEAST common form of SCID
-
Mutation of the gamma-c chain of IL-2 receptor (CD132)
-
Normal B cell levels
-
lack of delayed hypersensitivity, atrophy of thymus, susceptible to viral fungal and bacterial infections, lymphocytopenia
Question 16
Question
All of the following are true except?
Question 17
Question
The following are correctly matched except?
Answer
-
X linked SCID - absent T cells, B cells present - Jak 3 deficiency and CD45 deficiency
-
IL-7R alpha chain deficiency - CD3 delta chain deficiency - absent T cell, B cell absent
-
ADA deficiency - absent T and B cells
-
RAG1 or RAG2 deficiency - absent T and B cells
Question 18
Question
All of the following are true about Wiskott-ALdrich Syndrome except ?
Answer
-
X-linked recessive
-
Thrombocytosis (elevated platelet levels)
-
Severe eczema by one year of age - elevated IgE
-
recurrent pyogenic infections with encapsulated bacteria, bloody diarrhea
Question 19
Question
All of the following about Ataxia-Telangiectasia are true except?
Answer
-
Autosomal recessive
-
Selective IgM deficiency
Question 20
Question
X-linked lymphoproliferative syndrome - highly fatal infectious mononucleosis
Question 21
Question
In both multiple mylemoa and Waldenstrom's Macrogobulinemia have punched out lesions in the skull