Commentary |

Making Sense of Nonsyndromic Deafness

Richard J. H. Smith, MD; Patrick L. M. Huygen, PhD
Arch Otolaryngol Head Neck Surg. 2003;129(4):405-406. doi:10.1001/archotol.129.4.405.
Text Size: A A A
Published online


IN 1992, León et al1 mapped the first nonsyndromic deafness locus to chromosome 5q31 in a large kindred from Costa Rica, segregating autosomal dominant postlingual deafness that begins as a low-frequency loss at about age 10 years and progresses to involve all frequencies by age 30 years. Five years later, Lynch et al2 identified a protein-truncating mutation in the causative gene HDIA1, the human homologue of the Drosophila gene diaphanous. As of September 2002, 41 dominant (DFNA + integer), 33 recessive (DFNB + integer) and 8 X-linked (DFN + integer) deafness loci have been mapped and 29 different deafness-related genes have been cloned.3

Figures in this Article

Sign In to Access Full Content

Don't have Access?

Register and get free email Table of Contents alerts, saved searches, PowerPoint downloads, CME quizzes, and more

Subscribe for full-text access to content from 1998 forward and a host of useful features

Activate your current subscription (AMA members and current subscribers)

Purchase Online Access to this article for 24 hours

First Page Preview

View Large
First page PDF preview


Place holder to copy figure label and caption

Selection of audioprofiles associated with autosomal dominant nonsyndromic loci showing age in decade steps. Asterisk indicates that the audioprofile has been obtained by averaging threshold data derived from several families; other audioprofiles pertain to a single family. (For original data sources and method descriptions, see Cremers and Smith,8 Pennings et al,9 and Huygen et al.10)

Graphic Jump Location




Meets CME requirements for:
Browse CME for all U.S. States
Accreditation Information
The American Medical Association is accredited by the Accreditation Council for Continuing Medical Education to provide continuing medical education for physicians. The AMA designates this journal-based CME activity for a maximum of 1 AMA PRA Category 1 CreditTM per course. Physicians should claim only the credit commensurate with the extent of their participation in the activity. Physicians who complete the CME course and score at least 80% correct on the quiz are eligible for AMA PRA Category 1 CreditTM.
Note: You must get at least of the answers correct to pass this quiz.
You have not filled in all the answers to complete this quiz
The following questions were not answered:
Sorry, you have unsuccessfully completed this CME quiz with a score of
The following questions were not answered correctly:
Commitment to Change (optional):
Indicate what change(s) you will implement in your practice, if any, based on this CME course.
Your quiz results:
The filled radio buttons indicate your responses. The preferred responses are highlighted
For CME Course: A Proposed Model for Initial Assessment and Management of Acute Heart Failure Syndromes
Indicate what changes(s) you will implement in your practice, if any, based on this CME course.
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).
Submit a Comment


Some tools below are only available to our subscribers or users with an online account.

Web of Science® Times Cited: 5

Sign In to Access Full Content

Related Content

Customize your page view by dragging & repositioning the boxes below.

See Also...
Articles Related By Topic
Related Topics
PubMed Articles