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Table 1 List of the currently available studies unrevealing the correlation of specific genes and genomic variants with hydroxyurea treatment efficacy. Findings were obtained using search engines databases such as PubMed Central (PMC-NCBI), dbSNP [76], and based on findings from our previous work [25, 69]

From: Genome-based therapeutic interventions for β-type hemoglobinopathies

Disease

N of patients

Ancestry

Gene(s)

dbSNP rsID

Location

Reference

SCA

137

African American

HAO2

MAP3K5

MAP3K5

TOX

TOX

TOX

TOX

TOX

NOS1

NOS1

FLT1

FLT1

FLT1

ARG2

ARG2

NOS2A

NOS2A

rs10494225rs9376230rs9483947 rs826729 rs765587 rs9693712 rs172652 rs380620 rs816361 rs7977109 rs9319428 rs2182008 rs8002446 rs10483801 rs10483802 rs1137933 rs944725

Untranslated

Intronic

Intronic

Intronic

Intronic

Intronic

Intronic

Intronic

Intronic

Intronic

Intronic

Intronic

Intronic

Intronic

Intronic

Synonymous

Intronic

[68]

TDT, NTDT,

Hb S/β-Thal

87

Hellenic

MAP3K5

NOS2A

ARG2

STR 5’-GCGCG-3’

rs944725

rs10483801

Promoter

Intronic

Intronic

[69]

β-thal major, Intermedia,

Hb S/β-Thal

138

Hellenic

MAP3K5

MAP3K5

rs9483947 rs9376230

Intronic

Intronic

[88]

β-thal major, Intermedia,

Hb S/β-Thal

143

Hellenic

KLF10

rs3191333

3´‑UTR

[70]

β-thal major, Intermedia,

SCD

75

Egyptian

KLF10

rs3191333

3’-UTR

[71]

β-thal major, NTDT,

Hb S/β-Thal

165

Hellenic

SIN3A

rs7166737

Intronic

[71]

β-thal major, NTDT,

Hb S/β-Thal

210

Hellenic

KLF4

rs2236599

Non-coding transcript exon variant

[63]

β-thal major, Intermedia

79

Western Indian

HBG2

XmnI polymorphism

promoter

[83]

SCD

150

N/A

HBG2

XmnI polymorphism

promoter

[76]

β-thal major

45

N/A

HBG2

XmnI polymorphism

promoter

[77]

β-thal major

133

Iranian

HBG2

HBB

XmnI polymorphism

promoter

[78]

β-thal major

143

N/A

HBG2

XmnI polymorphism

promoter

[79]

β-thal major

54

Algerian

HBG2

XmnI polymorphism

promoter

[80]

β-thal major

18

N/A

HBG2

XmnI polymorphism

promoter

[81]

β-thal intermedia

37

N/A

HBG2

XmnI polymorphism

promoter

[82]

β-thal major/intermedia

81

Iranian

HBG2

XmnI polymorphism

promoter

[85]

  1. N/A Not applicable, NTDT Non-Transfusion dependent thalassemia, TDT Transfusion dependent thalassemia, SCD Sickle cell disease, SCA Sickle cell anemia, Hb S/β-Thal compound heterozygous condition