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Increased prevalence of immunoglobulin A deficiency in patients with the chromosome 22q11.2 deletion syndrome (DiGeorge syndrome/velocardiofacial syndrome).
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We
wished
to
determine
the
prevalence
of
immunoglobulin
A
(
IgA
)
deficiency
in
patients
with
the
chromosome
22
q
11
.
2
deletion
syndrome
.
A
total
of
32
patients
with
the
chromosome
22
q
11
.
2
deletion
were
examined
for
IgA
deficiency
.
We
report
a
13
%
(
n
=
4
)
prevalence
of
IgA
deficiency
in
patients
with
this
syndrome
.
The
odds
ratio
of
IgA
deficiency
in
this
population
is
14
.
20
(
P
<
0
.
0001
)
.
This
confirms
the
occurrence
of
significant
humoral
deficits
in
this
predominantly
cellular
immunodeficiency
.
