Hypothyroidism Associated with ATP8B1 Deficiency

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• 作者：Liting Li ; PhD¹ ; Maesha Deheragoda ; MD ; PhD² ; Yi Lu ; MD¹ ; Jingyu Gong ; MD³ ; Jianshe Wang ; MD ; PhD¹ ; ³ ; ^{jshwang@shmu.edu.cn" class="auth_mail" title="E-mail the corresponding author}
• 关键词：ABCB11 ; ATP-binding cassette ; subfamily B (MDR/TAP) ; member 11 ; ATP8B1 ; ATPase ; aminophospholipid transporter ; class I ; type 8B ; member 1 ; BRIC ; Benign recurrent intrahepatic cholestasis ; BSEP ; Bile salt export pump ; GGT ; γ-glutamyltransferase ; L-T4 ; Levo-thyroxine ; MRP2 ; Multidrug resistance-associated protein 2 ; OMIM ; Online Mendelian Inheritance in Man ; PCR ; Polymerase chain reaction ; PFIC ; Progressive familial intrahepatic cholestasis ; TJP2 ; Tight junction protein 2 ; TSH ; Thyroid-stimulating
• 刊名：The Journal of Pediatrics
• 出版年：2015
• 出版时间：December 2015
• 年：2015
• 卷：167
• 期：6
• 页码：1334-1339.e1
• 全文大小：230 K

文摘

To examine whether hypothyroidism is an extrahepatic feature of ATPase, aminophospholipid transporter, class I, type 8B, member 1 (ATP8B1) deficiency.

Study design

Children with normal γ-glutamyltransferase cholestasis (n = 47; 13 patients with ATP8B1 deficiency, 19 with ATP-binding cassette, subfamily B (MDR/TAP), member 11 (ABCB11) deficiency, and 15 without either ATP8B1 or ABCB11 mutations) were enrolled. Clinical information and thyroid function test results were retrospectively retrieved from clinical records and compared. Hypothyroidism was diagnosed by clinical-biochemistry criteria (thyroid function test results).

Results

Three out of 13 patients with ATP8B1 deficiency were diagnosed as hypothyroid and 2 as subclinically hypothyroid. The frequency of hypothyroidism and subclinical hypothyroidism was significantly higher than in patients with ABCB11 deficiency (5/13 vs 0/19, P = .006) and in patients without ATP8B1 or ABCB11 mutations (5/13 vs 0/15, P = .013). Thyroid function test results normalized after hormone replacement in all 5 patients, with no relief of cholestasis.

Conclusions

As hypothyroidism can be another extrahepatic feature of ATP8B1 deficiency, thyroid function should be monitored in these patients.