Table 1.

Clinical and immunologic findings prior to transplantation and procedures required for clinical care


ID no., age at tx*

22q11, CHARGE status

Clinical findings at presentation

Initial T-cell count, age

PHA response, (bkg), age
DIG001§, day 90   22q11 normal   PDA, hypocalcemia (with seizure), GER, single left kidney   1/mm3, day 36   1 457 cpm (1 045 cpm) day 71  
DIG002, day 96   22q11 normal CHARGE   PDA, tracheomalacia, GER, ear anomaly, hypocalcemia, coloboma, microphallus, cleft lip and palate   10/mm3, day 23   568 cpm (654 cpm) day 23  
DIG003, day 51   22q11 hemi   Aortic narrowing, abnormal vessels, dilated coronary sinus, omphalocele, malrotation, malformed ear   0/mm3, day 33   8 674 cpm (9 965 cpm) day 33  
DIG004, day 127   22q11 hemi   ASD, PDA, right aortic arch, cleft soft palate, abnormalities of digits, hypocalcemia, severe GER, tracheomalacia, CMV infection, chronic ventilation, use of oscillator   0/mm3, day 126   1 093 cpm (1 214 cpm) day 62  
DIG005, day 63   22q11 normal CHARGE   Microphallus with undescended testes, laryngomalacia, ovoid left kidney, transient hypocalcemia, right vocal cord adduction paresis after surgery, PDA, left SVC, dilated coronary sinus, bilateral coloboma, hearing deficit, nasopharyngeal reflux with aspiration, development delay   337 CD4 T cells/mm3; and 0 CD8 cells (3 naive CD4 T cells/mm3), day 59  15 079 cpm (964 cpm) day 31; and 1864 cpm (573 cpm) day 44# 
DIG006, day 33   22q11 hemi   TOF, right aortic arch, hypocalcemia, malrotation   16/mm3, day 27 (note: subsequent 10 tests had 0/mm3 T cells)   360 cpm (362 cpm) day 5  
DIG007, day 133   22q11 hemi   IAA type B, PDA, VSD, hypocalcemia, laryngomalacia, GER, episodes of sepsis, right renal agenesis, grade I hydronephrosis on left, hernias, poor swallow   0/mm3, day 115   305 cpm (128 cpm) day 119  
DIG009, day 75   22q11 hemi   Hypocalcemia, aberrant right subclavian artery   0/mm3, days 17 and 42   Not done  
DIG010, day 53   22q11 normal CHARGE   GER, PDA, choanal atresia, hearing loss, bilat colobomas, hydoureteral reflux grade 4, hydronephrosis, microphallus, undescended testes   22/mm3, day 43   426 cpm (219 cpm) day 43  
DIG011, day 67   22q11 normal CHARGE   Bilat coloboma, AV canal, complete right sided cleft lip and palate, developmental delay, decreased hearing, hypocalcemia, inguinal hernias, GER, partial agenesis of corpus callosum, single left kidney, grade I hydronephrosis   0/mm3, day 41   204 cpm (340 cpm) day 41  
DIG012, day 82   22q11 normal   Truncus, hypocalcemia, hemivertebra T10-11 on left, GER   0/mm3, day 27   1 701 cpm (476 cpm) day 32  
DIG016, day 107
 
22q11 hemi CHARGE
 
PDA, TOF, hypoplastic right and left PA, VSD, hypocalcemia, single right kidney, hydroureteronephrosis, decreased hearing, GER
 
0/mm3, days 41 and 86
 
1 318 cpm (677 cpm) day 41
 

ID no., age at tx*

22q11, CHARGE status

Clinical findings at presentation

Initial T-cell count, age

PHA response, (bkg), age
DIG001§, day 90   22q11 normal   PDA, hypocalcemia (with seizure), GER, single left kidney   1/mm3, day 36   1 457 cpm (1 045 cpm) day 71  
DIG002, day 96   22q11 normal CHARGE   PDA, tracheomalacia, GER, ear anomaly, hypocalcemia, coloboma, microphallus, cleft lip and palate   10/mm3, day 23   568 cpm (654 cpm) day 23  
DIG003, day 51   22q11 hemi   Aortic narrowing, abnormal vessels, dilated coronary sinus, omphalocele, malrotation, malformed ear   0/mm3, day 33   8 674 cpm (9 965 cpm) day 33  
DIG004, day 127   22q11 hemi   ASD, PDA, right aortic arch, cleft soft palate, abnormalities of digits, hypocalcemia, severe GER, tracheomalacia, CMV infection, chronic ventilation, use of oscillator   0/mm3, day 126   1 093 cpm (1 214 cpm) day 62  
DIG005, day 63   22q11 normal CHARGE   Microphallus with undescended testes, laryngomalacia, ovoid left kidney, transient hypocalcemia, right vocal cord adduction paresis after surgery, PDA, left SVC, dilated coronary sinus, bilateral coloboma, hearing deficit, nasopharyngeal reflux with aspiration, development delay   337 CD4 T cells/mm3; and 0 CD8 cells (3 naive CD4 T cells/mm3), day 59  15 079 cpm (964 cpm) day 31; and 1864 cpm (573 cpm) day 44# 
DIG006, day 33   22q11 hemi   TOF, right aortic arch, hypocalcemia, malrotation   16/mm3, day 27 (note: subsequent 10 tests had 0/mm3 T cells)   360 cpm (362 cpm) day 5  
DIG007, day 133   22q11 hemi   IAA type B, PDA, VSD, hypocalcemia, laryngomalacia, GER, episodes of sepsis, right renal agenesis, grade I hydronephrosis on left, hernias, poor swallow   0/mm3, day 115   305 cpm (128 cpm) day 119  
DIG009, day 75   22q11 hemi   Hypocalcemia, aberrant right subclavian artery   0/mm3, days 17 and 42   Not done  
DIG010, day 53   22q11 normal CHARGE   GER, PDA, choanal atresia, hearing loss, bilat colobomas, hydoureteral reflux grade 4, hydronephrosis, microphallus, undescended testes   22/mm3, day 43   426 cpm (219 cpm) day 43  
DIG011, day 67   22q11 normal CHARGE   Bilat coloboma, AV canal, complete right sided cleft lip and palate, developmental delay, decreased hearing, hypocalcemia, inguinal hernias, GER, partial agenesis of corpus callosum, single left kidney, grade I hydronephrosis   0/mm3, day 41   204 cpm (340 cpm) day 41  
DIG012, day 82   22q11 normal   Truncus, hypocalcemia, hemivertebra T10-11 on left, GER   0/mm3, day 27   1 701 cpm (476 cpm) day 32  
DIG016, day 107
 
22q11 hemi CHARGE
 
PDA, TOF, hypoplastic right and left PA, VSD, hypocalcemia, single right kidney, hydroureteronephrosis, decreased hearing, GER
 
0/mm3, days 41 and 86
 
1 318 cpm (677 cpm) day 41
 

tx indicates transplantation; PHA, phytohemagglutinin; bkg, background; PDA, patent ductus arteriosis; GER, gastroesophageal reflux; cpm, counts per minute; hemi, hemizygous; ASD, atrial septal defect; CMV, cytomegalovirus; SVC, superior vena cava; TOF, tetralogy of Fallot; IAA, interrupted aortic arch; VSD, ventricular septal defect; AV, atrial ventricular; and PA, pulmonary atresia

*

The ages in this table are days of life

Occasional DiGeorge syndrome patients have been identified who are hemizygous for 10p13.34  These patients can always be detected by high-resolution chromosome banding (P. Scambler, personal e-mail communication, April 2002), which was done on each patient who was not 22q11 hemizygous. No patient was hemizygous for 10p13

Normal values are as follows: normal T-cell count for age 2 days to 11 months is 1700 to 3600/mm3 for the 25th to 75th percentile35 ; the mean control PHA response for these assays was 223 701 cpm (± 1 SD was 144 954 cpm to 345 226 cpm). The background represents the cpm of cells incubated with medium only

§

Patients DIG001-DIG005 were reported previously.23,28,36 

This data point was obtained from the referring hospital

The T-cell count is given from day 59 of life since this is the first day that naive cells were examined. Earlier total T-cell counts were similar. No genetic testing was done on these T cells prior to transplantation. On day 63 after transplantation 16% of the circulating T cells were female (donor). By 2 years, all sorted T cells were male. An additional less sensitive test (sex chromosome analysis of PBMCs) showed only male cells on day 79 after transplantation

#

The PHA response reported is the first one obtained. Although it looks higher than that of the other patients, on that same day the concanavalin A (ConA) response was 749 cpm with a background of 964 cpm. Two weeks later, the PHA response was only 1269 cpm with a background of 573 cpm. The ConA response on this date was 1864 cpm with a background of 573. Thus, this patient is similar to the others in lack of T-cell function

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