Rosetta Stone for HLA Haplotyping

Labcorp: ACC 20001604256 HLA DRB, DQ Typing Labcorp Test #; 167120

DRB1

DQ

DRB3

DRB4

DRB5

Clinical

Multisusceptible

4

3

53

Severe RA, Malaria, Autoimmune hepatitis 3%

11/12

3

52B

Vaccine, athletes tall/hypermobile 1%

14

5

52B

0.1% incidence

Mold

7

2/3

53

13

6

52A,B,C

0.05% incidence

17

2

52A

18*

4

52A

Borrelia, post Lyme Syndrome

15

6

51

16

5

51

Dinoflagellates

4

7/8

53

Ciguatera

4

3

53

11

3

52B

Multiple Antibiotic Resistant Staph epidermidis (MARCoNS)

11

7

52B

Low MSH

1

5

No recognized significance

8

3,4,6

53

Low-risk Mold

7

9

53

12

7

52B

9

9

53

Rosetta Stone Interpretation:

1

Look at the LabCorp report. There are five categories of line entries:

DRB1

DQ

DRB3

DRB4

DRB5

2

Each individual will have two sets of three alleles;

Unless the DRB1 is 1, 8 or 10.

i. Those patients will only have a DQ.

ii. These won't have DRB 3, 4, 5.

3

Each individual with a DRB1 other than 1, 8 or 10 will have a DQ and one other allele from DRB 3, 4, 5

4

1. If you are expecting to find two entries in, say DR 3, 4, 5 but only find one, the patient is homozygous for that allele and only one allele will appear on the PCR. Don't be worried that the numbers and letters look impossible to understand. They just have to be translated.

5

You will translate these categories into;

B1

DQ

B3

52 (ABC)

B4

53 &...

B5

51 respectively

If the translation were easy and made sense, you wouldn't need this

6

The numbers and letters in each of the 5 categories are given to an excessive amount of detail. Write down only the first two numbers in each line.

7

DRB1; When you see 03 as one of the two genes, an allele, for DRB1, rewrite it as 17.

8

Record the entries in B3 by converting the 01 to A, the 02 to B and the 03 to C; this will give you 52A, 52B and 52C, respectively:

B4 is 53

B5 is 51

9

Record the genotypes in two columns, one each representing each parent, using the templates in the appendix.

1st Parent

DRB1-DQ-DR(3,4,5)

2nd Parent

DRB1-DQ-DR(3,4,5)

Wikipedia information on HLA;

LabCorp HLA Testing Menu