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Table 2 Relationship between PRDM2 mRNA levels in prolactinomas and various clinical parameters

From: Lower PRDM2 expression is associated with dopamine-agonist resistance and tumor recurrence in prolactinomas

 

PRDM2mRNA levels

  

Feature

High*

Low

Chi-square

p-Value

All cases

12

12

  

Patient’s age

    

≥50

5

6

0.168

0.682

<50

7

6

  

Patient’s gender

    

Male

9

7

0.756

0.385

Female

3

5

  

Serum PRL levels

    

≥435 μg/ml **

4

5

0.178

0.673

<435 μg/ml

8

7

  

Tumor size

    

≥2 cm

5

7

0.670

0.413

<2 cm

7

5

  

Recurrence***

    

Yes

4

10

6.511

0.011

No

8

2

  

Resistance to BRC****

    
 

4

9

4.332

0.037

 

8

3

  
  1. *The median expression level was used as the cutoff. Low PRDM2 mRNA levels were defined as values below the 50th percentile of the 12 patients; values at or above the 50th percentile were classified as high levels.
  2. **The median serum PRL level was used as the cutoff: 435 μg/ml. Low serum PRL levels were defined as values below the 50th percentile of the 12 patients; values at or above the 50th percentile were classified as high levels.
  3. ***Recurrence was defined as the discovery of an elevated PRL level at any time in the postoperative surveillance period after an initial remission.
  4. ****Resistant tumors to BRC were defined as those from patients whose serum PRL levels remained abnormally high after at least 3 months of treatment with a daily dose of 15 mg BRC.