Table 3.

HCT for other hematopoietic malignancy predisposition syndromes

Disease and referenceNo. pts, median ageDisease phasePrep regimenDonor type stem cell sourceGVHDTRMOSFollow-upComments
CAMT46  63 pts NR MAC 82% MRD or MUD > 80% A-GVHD: II-IV 13%. 13% at 3 y 5-y OS: 76% 1,7 y (0.1-14) No difference in OS according to donor or stem cell source 
7 y (0.5-17) BM (n = 31); PB (n = 21); UCB (n = 11) Extensive C-GVHD: 6.3% 
GATA247  15 pts MDS (n = 12) 73% CY + TBI MRD or MUD 53% A-GVHD: II- IV: 33% 20% at 1 y 5-y OS: 65% 5-y DFs:51 5,0 y (1-8.5) Neurological toxicities and thrombotic events more frequent after GATA2 transplants 
15 y (5-20) AL (n = 3) BM (n = 11) and UCB (n = 4) Extensive C-GVHD 26% 
MECOM49  10 pts Progressive BMF NR MRD or MUD: 9 pts NR 3 pts died 7 pts alive NR Sensorineural deafness, kidney, heart, and skeletal defects 
0.7 y (0.2-13) BM (n = 9) and UCB (n = 1) 
MECOM48  6 pts Progressive BMF NR NR NR 2 deaths from cardiac problems 4 pts alive 10 mo 4 pts are alive with no major complications after HCT 
1.3 y (0.5-3) 
ERCC6L248  3 pts BMF (n = 2) NR NR NR 1 death EBV lymphoma 2 pts alive 1 and 14 y 2 pts are alive with no major complications after HCT 
13; 14; 22 y MDS (n = 1) 
 SAMD9: 4 pts BMF (n = 3) NR NR NR 2 deaths 8 pts alive 4 y (0.1-7) SAMD9: 3 pts alive and well 
SAMD9 SAMD9L: 6 pts 
SAMD9L48  3 y (1.5-33) MDS (n = 7) SAMD9L: 5 pts alive, one with neurological complication 
  • SAMD9

  • SAMD9L50 

 
  • SAMD9: 6 pts

  • SAMD9L: 6 pts

  • 2.8 y (1.2-12)

 
  • MDS (n = 10)

  • Other (n = 2)

 
  • MAC (n = 9)

  • RIC (n = 3)

 
  • MRD or MUD (n = 9) Haplo (n = 1) UCBT (n = 2)

  • BM (n = 10) UCB (n = 2)

 
  • A- GVHD: II-III 2 pts

  • Mild C-GVHD: 2 pts

 
  • 2 deaths AML (n = 1)

  • DAH (n = 1)

 
10 pts alive 3.1 y (0.1-14) 
  • SAMD9: all alive with developmental delays. MIRAGE syndrome (n = 4): short stature, adrenal insufficiency.

  • SAMD9L: 4 pts alive. No neurologic manifestations thus far.

 
Disease and referenceNo. pts, median ageDisease phasePrep regimenDonor type stem cell sourceGVHDTRMOSFollow-upComments
CAMT46  63 pts NR MAC 82% MRD or MUD > 80% A-GVHD: II-IV 13%. 13% at 3 y 5-y OS: 76% 1,7 y (0.1-14) No difference in OS according to donor or stem cell source 
7 y (0.5-17) BM (n = 31); PB (n = 21); UCB (n = 11) Extensive C-GVHD: 6.3% 
GATA247  15 pts MDS (n = 12) 73% CY + TBI MRD or MUD 53% A-GVHD: II- IV: 33% 20% at 1 y 5-y OS: 65% 5-y DFs:51 5,0 y (1-8.5) Neurological toxicities and thrombotic events more frequent after GATA2 transplants 
15 y (5-20) AL (n = 3) BM (n = 11) and UCB (n = 4) Extensive C-GVHD 26% 
MECOM49  10 pts Progressive BMF NR MRD or MUD: 9 pts NR 3 pts died 7 pts alive NR Sensorineural deafness, kidney, heart, and skeletal defects 
0.7 y (0.2-13) BM (n = 9) and UCB (n = 1) 
MECOM48  6 pts Progressive BMF NR NR NR 2 deaths from cardiac problems 4 pts alive 10 mo 4 pts are alive with no major complications after HCT 
1.3 y (0.5-3) 
ERCC6L248  3 pts BMF (n = 2) NR NR NR 1 death EBV lymphoma 2 pts alive 1 and 14 y 2 pts are alive with no major complications after HCT 
13; 14; 22 y MDS (n = 1) 
 SAMD9: 4 pts BMF (n = 3) NR NR NR 2 deaths 8 pts alive 4 y (0.1-7) SAMD9: 3 pts alive and well 
SAMD9 SAMD9L: 6 pts 
SAMD9L48  3 y (1.5-33) MDS (n = 7) SAMD9L: 5 pts alive, one with neurological complication 
  • SAMD9

  • SAMD9L50 

 
  • SAMD9: 6 pts

  • SAMD9L: 6 pts

  • 2.8 y (1.2-12)

 
  • MDS (n = 10)

  • Other (n = 2)

 
  • MAC (n = 9)

  • RIC (n = 3)

 
  • MRD or MUD (n = 9) Haplo (n = 1) UCBT (n = 2)

  • BM (n = 10) UCB (n = 2)

 
  • A- GVHD: II-III 2 pts

  • Mild C-GVHD: 2 pts

 
  • 2 deaths AML (n = 1)

  • DAH (n = 1)

 
10 pts alive 3.1 y (0.1-14) 
  • SAMD9: all alive with developmental delays. MIRAGE syndrome (n = 4): short stature, adrenal insufficiency.

  • SAMD9L: 4 pts alive. No neurologic manifestations thus far.

 

A-GVHD, acute GVHD; AL, acute leukemias; BM, bone marrow; BMF, bone marrow failures; CAMT, congenital amegakaryocytic thrombocytopenia; C-GVHD, chronic GVHD; CY, cyclophosphamide; DAH, diffuse alveolar hemorrhage; NR, not reported; pts, patients; TBI, total body irradiation; UCB, unrelated cord blood.

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