C7462T-F3

**Figure 1\. Pedigree diagram for family C7462T\-F3\.**

![](/media/202606/20260622183937647339.png)

# Pedigree Information

| **No.** | **Position** | **Variant** | **Family ID** | **Nationality** | **Diseases** | **Unaffected Maternal Relatives** | **Affected Maternal Relatives** | **Publication Year** | **PMID/Ref** | **Note** |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | 7462 | m.7462C\>T | C7462T\-F3 | Brazil | Hearing loss | 7 | 8 | 2010 | [20722495](https://pubmed.ncbi.nlm.nih.gov/20722495/) |  |

The **m.7462C\>T** variant in MT\-TS1 was reported in family C7462T\-F3 from Brazil with hearing loss. The pedigree record reported 7 unaffected and 8 affected maternal relatives, and the carrier table includes 16 listed carriers. Homoplasmy was reported in 1/16 listed carriers; 9/16 carriers were affected, and the main clinical manifestation among affected carriers was hearing loss.

# Carrier Information

| **No.** | **Position** | **Variant** | **Family ID** | **Carrier ID** | **Type (Fam/De novo/Uninf)** | **Gender (F/M)** | **Proband (Y/N)** | **Affected (Y/N)** | **Die/Alive(D/A)** | **Age** | **Blood Mutant Level** | **Muscle Mutant level** | **Urine Mutant level** | **Other Mutant level** | **Clinical Features** | **Note** |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | 7462 | m.7462C\>T | C7462T\-F3 | C7462T\-F3\-II1 | Fam | F | N | Y | A | ND | / | / | / | / | Hearing loss |  |
| 2 | 7462 | m.7462C\>T | C7462T\-F3 | C7462T\-F3\-II2 | Fam | F | N | Y | A | ND | / | / | / | / | Hearing loss |  |
| 3 | 7462 | m.7462C\>T | C7462T\-F3 | C7462T\-F3\-II3 | Fam | F | N | Y | A | ND | / | / | / | / | Hearing loss |  |
| 4 | 7462 | m.7462C\>T | C7462T\-F3 | C7462T\-F3\-II4 | Fam | F | N | Y | A | ND | / | / | / | / | Hearing loss |  |
| 5 | 7462 | m.7462C\>T | C7462T\-F3 | C7462T\-F3\-II5 | Fam | F | N | Y | A | ND | / | / | / | / | Hearing loss |  |
| 6 | 7462 | m.7462C\>T | C7462T\-F3 | C7462T\-F3\-III2 | Fam | M | N | Y | A | ND | / | / | / | / | Hearing loss |  |
| 7 | 7462 | m.7462C\>T | C7462T\-F3 | C7462T\-F3\-III7 | Fam | M | N | N | A | ND | / | / | / | / | Healthy |  |
| 8 | 7462 | m.7462C\>T | C7462T\-F3 | C7462T\-F3\-III9 | Fam | M | N | Y | A | ND | / | / | / | / | Hearing loss |  |
| 9 | 7462 | m.7462C\>T | C7462T\-F3 | C7462T\-F3\-III11 | Fam | M | N | N | A | ND | / | / | / | / | Healthy |  |
| 10 | 7462 | m.7462C\>T | C7462T\-F3 | C7462T\-F3\-III15 | Fam | F | N | Y | A | ND | / | / | / | / | Hearing loss |  |
| 11 | 7462 | m.7462C\>T | C7462T\-F3 | C7462T\-F3\-IV3 | Fam | F | N | N | A | ND | / | / | / | / | Healthy |  |
| 12 | 7462 | m.7462C\>T | C7462T\-F3 | C7462T\-F3\-IV4 | Fam | F | N | N | A | ND | / | / | / | / | Healthy |  |
| 13 | 7462 | m.7462C\>T | C7462T\-F3 | C7462T\-F3\-IV5 | Fam | M | N | N | A | ND | / | / | / | / | Healthy |  |
| 14 | 7462 | m.7462C\>T | C7462T\-F3 | C7462T\-F3\-IV6 | Fam | M | N | N | A | ND | / | / | / | / | Healthy |  |
| 15 | 7462 | m.7462C\>T | C7462T\-F3 | C7462T\-F3\-IV13 | Fam | M | N | N | A | ND | / | / | / | / | Healthy |  |
| 16 | 7462 | m.7462C\>T | C7462T\-F3 | C7462T\-F3\-V3 | Fam | F | Y | Y | A | 6 | Homo | / | / | / | Hearing loss |  |

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