Table 1.

GATA-1 mutations in AKML patients with single samples


Pt

Sex

Diagnosis

Age at diagnosis (mo)

DNA source

WBC count, × 109/L (% blast)

Karyotype

Sequence in genomic DNA*

Cloned sequence from genomic DNA (no. mutant clones/no. total clones)

Radiolabeled GATA1 exon 2 PCR products

Cloned sequence of bands cut from polyacrylamide gels (no. mutant clones/no. total clones)

Consequence of mutation

Clinical status/time since diagnosis
L02   M   AMKL   30   Diagnosis BM   9.3 (25)   47, XY, +21(c)[10]   267 ins 10   Wild type (0/5)   Wild-type band and faint insertion band   267 ins 10 (4/12)   267 ins 10 - Stop codon before Met 84   CCR/27 mo  
       49, XY, +8, +21, +21(c)[2]        
       48, XY, der(1)add (p32)[2]        
L03   M   AMKL   32   Diagnosis BM   41.3 (60)   del(3)(q21q26),i(7)(q10), del(16) (q22q24), +21c[7]/47, 21c[8]   317 del 13   ND   Wild-type band and prominent deletion band   317 del 13 (2/2)   317 del 13 - Exon 2 splice mutant   CCR/15 mo  
L07   M   AMKL   39   Diagnosis BM   6.2 (51)   48,XY,der(4)t(1;4) (q25q35),del(6) (q15q21),+11, +21c[10]   324 del 9   ND   Wild-type band and deletion band 1; faint deletion band 2   324 del 9 (2/3); 269 del 23 (3/6)   324 del 9 - exon 2 splice mutant; 269 del 23 - stop codon before Met 84   Died of sepsis during treatment  
       47,XY,+21c[2]        
L08   F   AMKL   13   Diagnosis BM   23.1 (58)   47,XX,t(4;11;13),+21c[9]   299 ins 1   Wild-type (6/8); 299 ins 1 (2/8)   Single wild-type band   ND   299 ins 1 - stop codon before Met 84   CCR/124 mo  
L10   M   AMKL   17   Diagnosis BM   14.1 (40)   48,XY,+21,+8[11]   317 del 13   ND   Wild-type band and deletion band   317 del 13 (5/9)   317 del 13 - exon 2 splice mutant   CCR/55 mo  
L11   M   AMKL   21   Diagnosis BM   63.7 (65)   47,XY,+21(c)[8]   299 ins 1   Wild-type (1/4); 299 ins 1 (3/4)   Wild-type band   ND   299 ins 1 - stop codon before Met 84   Died of sepsis during treatment  
T03
 
F
 
TMD
 
Birth
 
PB
 
200 (10)
 
47,XY,+21(c)[10]
 
161C>T
 
ND
 
Wild-type band
 
ND
 
161 C>T - stop codon before Met 84
 
Died at day +4; liver failure secondary to fibrosis
 

Pt

Sex

Diagnosis

Age at diagnosis (mo)

DNA source

WBC count, × 109/L (% blast)

Karyotype

Sequence in genomic DNA*

Cloned sequence from genomic DNA (no. mutant clones/no. total clones)

Radiolabeled GATA1 exon 2 PCR products

Cloned sequence of bands cut from polyacrylamide gels (no. mutant clones/no. total clones)

Consequence of mutation

Clinical status/time since diagnosis
L02   M   AMKL   30   Diagnosis BM   9.3 (25)   47, XY, +21(c)[10]   267 ins 10   Wild type (0/5)   Wild-type band and faint insertion band   267 ins 10 (4/12)   267 ins 10 - Stop codon before Met 84   CCR/27 mo  
       49, XY, +8, +21, +21(c)[2]        
       48, XY, der(1)add (p32)[2]        
L03   M   AMKL   32   Diagnosis BM   41.3 (60)   del(3)(q21q26),i(7)(q10), del(16) (q22q24), +21c[7]/47, 21c[8]   317 del 13   ND   Wild-type band and prominent deletion band   317 del 13 (2/2)   317 del 13 - Exon 2 splice mutant   CCR/15 mo  
L07   M   AMKL   39   Diagnosis BM   6.2 (51)   48,XY,der(4)t(1;4) (q25q35),del(6) (q15q21),+11, +21c[10]   324 del 9   ND   Wild-type band and deletion band 1; faint deletion band 2   324 del 9 (2/3); 269 del 23 (3/6)   324 del 9 - exon 2 splice mutant; 269 del 23 - stop codon before Met 84   Died of sepsis during treatment  
       47,XY,+21c[2]        
L08   F   AMKL   13   Diagnosis BM   23.1 (58)   47,XX,t(4;11;13),+21c[9]   299 ins 1   Wild-type (6/8); 299 ins 1 (2/8)   Single wild-type band   ND   299 ins 1 - stop codon before Met 84   CCR/124 mo  
L10   M   AMKL   17   Diagnosis BM   14.1 (40)   48,XY,+21,+8[11]   317 del 13   ND   Wild-type band and deletion band   317 del 13 (5/9)   317 del 13 - exon 2 splice mutant   CCR/55 mo  
L11   M   AMKL   21   Diagnosis BM   63.7 (65)   47,XY,+21(c)[8]   299 ins 1   Wild-type (1/4); 299 ins 1 (3/4)   Wild-type band   ND   299 ins 1 - stop codon before Met 84   Died of sepsis during treatment  
T03
 
F
 
TMD
 
Birth
 
PB
 
200 (10)
 
47,XY,+21(c)[10]
 
161C>T
 
ND
 
Wild-type band
 
ND
 
161 C>T - stop codon before Met 84
 
Died at day +4; liver failure secondary to fibrosis
 

PB indicates peripheral blood sample; BM, bone marrow; CCR, complete continuous remission; and ND, not done.

*

Sequence obtained from direct sequencing of genomic DNA

Nucleotide position 1 is taken from the submitted GenBank sequence of human GATA1 (NM_002049)

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