Interferon-alpha receptor-1 (IFNAR1) variants are associated

with protection against cerebral malaria in The Gambia

Christophe Aucan, Andrew J. Walley, Branwen J.W. Hennig, Jodene Fitness,

Angela Frodsham, Lyna Zhang, Dominic Kwiatkowski, and Adrian V.S. Hill

Genes Immun. 2003 Jun;4(4):275-82.

 

Additional informations:

Polymorphic markers from chromosome 21q22.1 in The Gambia

Candidate

Genes

Markers

Gene

Location

Variants1

Controls

Severe

Malaria

Cerebral

Malaria

Severe

Anaemia

Mild

Malaria

IFNAR2

F10V

Exon 2

T/G

n=

(0.87) 2

561

(0.85)

500

(0.84)

312

(0.86)

117

(0.91)

232

 

A285T

Exon 9

G/A

n=

(0.69)

507

(0.67)

496

(0.66)

310

(0.67)

116

(0.70)

226

 

 

 

 

 

 

 

 

 

Candidate

Genes

Markers

Gene

Location

Variants1

Controls

Severe

Malaria

Cerebral

Malaria

Severe

Anaemia

Mild

Malaria

IL10RB

K47E

Exon 2

A/G

n=

(0.94) 2

414

(0.94)

373

(0.94)

237

(0.92)

92

(0.94)

231

 

CA-1-repeat

Intron 6

CA

n=

(0.76) 3

188

(0.77)

187

ND

ND

ND

 

CA-2-repeat

 

Intron 6

CA

n=

(0.55)

188

(0.50)

187

ND

ND

ND

 

 

 

 

 

 

 

 

 

Candidate

Genes

Markers

Gene

Location

Variants1

Controls

Severe

Malaria

Cerebral

Malaria

Severe

Anaemia

Mild

Malaria

IFNAR1

-408

Promoter

C/T

n=

(0.95) 2

547

(0.96)

528

(0.96)

320

(0.96)

135

(0.95)

338

 

GT-repeat

Promoter

GT

n=

(0.73) 3

488

(0.77)

464

(0.80)

294

(0.75)

106

(0.72)

212

 

17470

Intron 3

G/C

n=

(0.66)

554

(0.64)

528

(0.62)

319

(0.65)

136

(0.65)

338

 

L168V

Exon 4

G/C

n=

(0.73)

532

(0.73)

467

(0.72)

327

(0.74)

137

(0.72)

335

 

IVS-repeat

Intron 5

ATTT

n=

(0.76)

510

(0.76)

479

(0.78)

303

(0.75)

108

(0.76)

218

 

30175

Intron 10

T/G

n=

(0.80)

557

(0.82)

530

(0.83)

320

(0.82)

137

(0.81)

340

 

 

 

 

 

 

 

 

 

Candidate

Genes

Markers

Gene

Location

Variants1

Controls

Severe

Malaria

Cerebral

Malaria

Severe

Anaemia

Mild

Malaria

IFNGR2

D21S370-repeat

5’UTR

GT

n=

(0.73) 3

186

(0.71)

183

ND

ND

ND

 

30354

Intron 2

C/T

n=

(0.71) 2

185

(0.70)

183

ND

ND

ND

 

46334

3’UTR

G/A

n=

(0.97)

309

(0.97)

201

ND

ND

ND

 

46341

3’UTR

T/C

n=

(0.83)

307

(0.84)

198

ND

ND

ND

 

Legend:

 

This table shows the 15 genetic markers studied within four candidate genes from the 21q22.1 locus.

1 common alleles / rare allele, or nucleotide repeat for microsatellites markers. 2 For SNP markers, allele frequencies within controls or malaria groups are given in parentheses for the most common allele. 3 For microsatellites markers, frequencies of heterozygous samples are given in parentheses. Numbers of studied samples are given for controls and malaria cases. UTR; untranslated region. ND; Not determined.

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